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figures.","correct":false,"explanation":"Graphs often omit some numerical detail rather than providing more. Their main advantage over long tables is that they show patterns quickly."},{"text":"They remove all data errors.","correct":false,"explanation":"Changing the presentation cannot correct errors in the original data. Graphs are useful because they show patterns quickly and make comparisons easier."},{"text":"They prove causal relationships.","correct":false,"explanation":"A graph may reveal a relationship, but it cannot by itself prove causation. Its advantage is that it shows patterns quickly."}]},{"id":"57d626f6-bd9d-40f9-8d6f-440937ac1eb6","cardType":"cloze","points":null,"front":"To construct a graph means to draw it from [ ].","back":"To construct a graph means to draw it from data.","mcqOptions":[{"text":"data","correct":true,"explanation":"Constructing a graph involves using given data values to plot points, bars or other features accurately on labelled axes."},{"text":"axes","correct":false,"explanation":"Axes provide the graph’s framework, but they are not the information from which it is drawn. A graph is constructed from data."},{"text":"labels","correct":false,"explanation":"Labels identify axes and categories after the graph is organised, but they do not supply the values plotted. A graph is constructed from data."},{"text":"conclusions","correct":false,"explanation":"Conclusions are drawn after interpreting a completed graph, not used as its starting material. The graph itself is constructed from data."}]},{"id":"9ba3e78e-f487-4806-aebb-6b92e3ffd549","cardType":"cloze","points":null,"front":"A variable is something that can [ ].","back":"A variable is something that can change.","mcqOptions":[{"text":"change","correct":true,"explanation":"A variable is a characteristic or quantity whose value can change, such as price, income, output or quantity demanded."},{"text":"stay fixed","correct":false,"explanation":"Staying fixed describes a constant or controlled factor, not the defining feature of a variable. A variable is something that can change."},{"text":"be removed","correct":false,"explanation":"Removing something from a dataset does not define a variable. A variable is a characteristic or quantity that can change between observations."},{"text":"have no value","correct":false,"explanation":"Having no value would mean information is missing, not that something is a variable. A variable is defined by its ability to change."}]},{"id":"2dd75544-2d89-4cf5-bc40-54d33e5d61af","cardType":"cloze","points":null,"front":"The horizontal axis is the [ ]; the vertical axis is the [ ].","back":"The horizontal axis is the x-axis; the vertical axis is the y-axis.","mcqOptions":[{"text":"The horizontal axis is the x-axis; the vertical axis is the y-axis.","correct":true,"explanation":"By standard graphing convention, the x-axis runs horizontally from left to right, while the y-axis runs vertically from bottom to top."},{"text":"The horizontal axis is the y-axis; the vertical axis is the x-axis.","correct":false,"explanation":"This reverses the standard axis names. The horizontal axis is the x-axis, while the vertical axis is the y-axis."},{"text":"The horizontal axis is the y-axis; the vertical axis is the y-axis.","correct":false,"explanation":"The two perpendicular axes have different names. The horizontal one is the x-axis, and only the vertical one is the y-axis."},{"text":"The horizontal axis is the x-axis; the vertical axis is the x-axis.","correct":false,"explanation":"The vertical axis is not another x-axis. Standard convention names the horizontal axis the x-axis and the vertical axis the y-axis."}]},{"id":"b952b11d-3875-44fa-8e65-92f13ee7eec8","cardType":"basic","points":2,"front":"Why must graph axes include units?","back":"Units show what the numbers measure.","mcqOptions":[{"text":"Units show what the numbers measure.","correct":true,"explanation":"Units identify the quantity represented by each numerical value, such as pounds, percentages or tonnes, allowing the graph to be interpreted correctly."},{"text":"Units show where the data came from.","correct":false,"explanation":"Units identify measured quantities, not the source of the dataset. Sources require a separate citation, while units show what the numbers measure."},{"text":"Units show how precise the graph looks.","correct":false,"explanation":"Precision depends on data collection and the chosen scale, not simply on displaying units. Units show what the numerical values measure."},{"text":"Units show how many points are plotted.","correct":false,"explanation":"The plotted marks can be counted directly without using units. Units are required to show what the numbers on the axes measure."}]},{"id":"e5169331-7a12-41fb-a50a-4e02815499f3","cardType":"cloze","points":null,"front":"A [ ] shows changes over time.","back":"A line graph shows changes over time.","mcqOptions":[{"text":"line graph","correct":true,"explanation":"A line graph joins observations in time order, making rises, falls and overall trends across a period easy to see."},{"text":"pie chart","correct":false,"explanation":"A pie chart displays how a total is divided into proportions, usually at one point in time. A line graph shows changes over time."},{"text":"scatter graph","correct":false,"explanation":"A scatter graph examines the relationship between two variables rather than tracking a sequence through time. A line graph shows changes over time."},{"text":"pictogram","correct":false,"explanation":"A pictogram uses repeated symbols to compare amounts across categories. Changes and trends over time are conventionally displayed using a line graph."}]},{"id":"2170563b-74f1-4242-9ba3-badc65cfe7fb","cardType":"basic","points":1,"front":"Which graph type compares separate categories?","back":"Use a bar chart.","mcqOptions":[{"text":"Use a bar chart.","correct":true,"explanation":"A bar chart uses separate bars for distinct categories, allowing their values to be compared clearly while preserving the gaps between categories."},{"text":"Use a line graph.","correct":false,"explanation":"A line graph mainly shows changes across continuous values or time, not comparisons between separate categories. A bar chart is appropriate for categories."},{"text":"Use a scatter graph.","correct":false,"explanation":"A scatter graph shows correlation between two numerical variables rather than comparing distinct categories. Separate categories should be compared with a bar chart."},{"text":"Use a histogram.","correct":false,"explanation":"A histogram represents grouped continuous data, with touching bars because the groups form intervals. A bar chart compares separate categories."}]},{"id":"2f7a6fb2-89b5-442d-87be-b6c4d7b3af7f","cardType":"cloze","points":null,"front":"A time series is data collected at [ ].","back":"A time series is data collected at different points in time.","mcqOptions":[{"text":"different points in time","correct":true,"explanation":"Time-series data records the same variable at multiple points in time, enabling changes, trends and fluctuations over a period to be analysed."},{"text":"one point in time","correct":false,"explanation":"Data collected at only one time is cross-sectional rather than a time series. A time series requires observations from different points in time."},{"text":"different points in space","correct":false,"explanation":"Observations across locations describe spatial or geographical data, not necessarily time-series data. A time series is collected at different points in time."},{"text":"a range of income levels","correct":false,"explanation":"Grouping observations by income compares categories or sections of a population rather than dates. Time-series data is collected at different points in time."}]},{"id":"4c1bb99d-1098-42be-abbc-26a98ccb70bb","cardType":"basic","points":1,"front":"What is a sensible vertical scale if the biggest value is 48?","back":"Use about 0 to 50.","mcqOptions":[{"text":"Use about 0 to 50.","correct":true,"explanation":"A scale from 0 to 50 slightly exceeds the highest value of 48, leaving space at the top while using a clear, sensible interval."},{"text":"Use about 0 to 60.","correct":false,"explanation":"Although 60 would include 48, it makes the graph less precise than necessary. A scale of 0 to 50 is more suitable because it is close to the maximum."},{"text":"Use about 10 to 50.","correct":false,"explanation":"Starting at 10 would conceal the zero point and distort the visual comparison. The sensible scale is about 0 to 50, which includes the full range."},{"text":"Use about 0 to 40.","correct":false,"explanation":"A maximum of 40 would not include the biggest value, 48, so the point could not be plotted. The vertical scale should reach about 50."}]},{"id":"9596d879-c67b-4e7f-8b01-4171fafb74d6","cardType":"basic","points":1,"front":"After plotting points on a line graph, how should they be joined?","back":"Join them in time order.","mcqOptions":[{"text":"Join them in time order.","correct":true,"explanation":"Joining points in time order shows how the variable changes from one period to the next, producing the correct line graph."},{"text":"Join them in size order.","correct":false,"explanation":"Ordering points by their values can connect later and earlier periods incorrectly. Points should be joined in time order so the trend follows the sequence of observations."},{"text":"Join them in alphabetical order.","correct":false,"explanation":"Alphabetical order does not represent the sequence in which the data occurred. The correct method is to connect the points in time order."},{"text":"Join them in random order.","correct":false,"explanation":"Randomly joining points creates a misleading pattern and ignores the chronology of the data. A line graph should connect observations in time order."}]},{"id":"5245fe5f-77c1-4b31-a529-39bb6b44f084","cardType":"basic","points":1,"front":"In the unemployment example, what vertical scale fits a highest value of 4.8%?","back":"Use 0% to 6%.","mcqOptions":[{"text":"Use 0% to 6%.","correct":true,"explanation":"A scale from 0% to 6% includes the highest value of 4.8% and leaves a sensible amount of space above it for a clear graph."},{"text":"Use 0% to 5%.","correct":false,"explanation":"A maximum of 5% leaves almost no room above 4.8% and may make the graph cramped. Extending the scale to 6% is more sensible."},{"text":"Use 1% to 6%.","correct":false,"explanation":"Starting at 1% omits the zero point and can exaggerate differences between values. The appropriate scale begins at 0% and reaches 6%."},{"text":"Use 0% to 10%.","correct":false,"explanation":"Although 10% includes 4.8%, it gives an unnecessarily broad scale and reduces precision. A 0% to 6% scale fits the data better."}]},{"id":"ef9a1b60-b9e8-4555-8d0e-d89e3870f37d","cardType":"cloze","points":null,"front":"Supply and demand graphs use [ ] on the vertical axis and [ ] on the horizontal axis.","back":"Supply and demand graphs use price on the vertical axis and quantity on the horizontal axis.","mcqOptions":[{"text":"Supply and demand graphs use price on the vertical axis and quantity on the horizontal axis.","correct":true,"explanation":"In standard supply and demand diagrams, price is shown on the vertical axis and quantity is shown on the horizontal axis, allowing their relationship to be compared."},{"text":"Supply and demand graphs use quantity on the vertical axis and price on the horizontal axis.","correct":false,"explanation":"This reverses the conventional axes used for supply and demand graphs. Price belongs on the vertical axis, while quantity belongs on the horizontal axis."},{"text":"Supply and demand graphs use income on the vertical axis and quantity on the horizontal axis.","correct":false,"explanation":"Income is not the standard vertical variable in a basic supply and demand graph. The vertical axis shows price, while the horizontal axis shows quantity."},{"text":"Supply and demand graphs use price on the vertical axis and time on the horizontal axis.","correct":false,"explanation":"Time is used for time-series graphs, not standard supply and demand diagrams. These graphs place quantity on the horizontal axis and price on the vertical axis."}]},{"id":"50add8a2-3366-4da7-981b-94ca9fa3b6ec","cardType":"basic","points":2,"front":"Why does a demand curve usually slope downwards?","back":"As price falls, consumers usually buy more.","mcqOptions":[{"text":"As price falls, consumers usually buy more.","correct":true,"explanation":"The demand curve slopes downwards because a lower price usually encourages consumers to purchase a greater quantity, other factors being unchanged."},{"text":"As price falls, consumers usually buy less.","correct":false,"explanation":"This reverses the usual inverse relationship between price and quantity demanded. As price falls, consumers generally buy more, causing the demand curve to slope downwards."},{"text":"As price falls, consumers usually buy the same amount.","correct":false,"explanation":"If quantity bought stayed unchanged when price changed, there would be no movement along the usual demand curve. Lower prices generally lead consumers to buy more."},{"text":"As price falls, consumers usually stop buying.","correct":false,"explanation":"A lower price normally makes a product more affordable and increases quantity demanded, rather than causing consumers to stop buying. The usual result is that they buy more."}]},{"id":"4057ed27-273f-4261-963c-81868bba13e1","cardType":"basic","points":2,"front":"Why does a supply curve usually slope upwards?","back":"As price rises, producers usually supply more.","mcqOptions":[{"text":"As price rises, producers usually supply more.","correct":true,"explanation":"The supply curve usually slopes upwards because higher prices increase the potential reward from production, encouraging producers to offer a greater quantity."},{"text":"As price rises, producers usually supply less.","correct":false,"explanation":"This reverses the usual positive relationship between price and quantity supplied. As price rises, producers are generally encouraged to supply more."},{"text":"As price rises, producers usually supply the same amount.","correct":false,"explanation":"A constant quantity supplied would not show the usual upward-sloping supply relationship. Higher prices generally encourage producers to increase the quantity supplied."},{"text":"As price rises, producers usually stop supplying.","correct":false,"explanation":"Higher prices usually make production more profitable rather than causing producers to leave the market. Producers are generally encouraged to supply more."}]},{"id":"06c480ff-1874-4e96-ab0c-eb20d37d9718","cardType":"basic","points":1,"front":"How is market equilibrium found on a supply and demand graph?","back":"It is where demand and supply cross.","mcqOptions":[{"text":"It is where demand and supply cross.","correct":true,"explanation":"Market equilibrium occurs where the demand and supply curves intersect, because the quantity demanded equals the quantity supplied at that price."},{"text":"It is where demand and supply are parallel.","correct":false,"explanation":"Parallel curves do not identify a market-clearing price or quantity because they do not intersect. Equilibrium is found where demand and supply cross."},{"text":"It is where demand is highest.","correct":false,"explanation":"The highest point on the demand curve does not necessarily match the quantity producers want to supply. Equilibrium requires demand and supply to cross."},{"text":"It is where supply is highest.","correct":false,"explanation":"The maximum point on the supply curve alone does not show market equilibrium. Equilibrium is the intersection where quantity demanded equals quantity supplied."}]},{"id":"dfbfa6ec-2a1b-4168-89ad-ed7f6c82ac7c","cardType":"basic","points":2,"front":"How should a price-quantity point from a schedule be plotted?","back":"Use quantity on the x-axis and price on the y-axis.","mcqOptions":[{"text":"Use quantity on the x-axis and price on the y-axis.","correct":true,"explanation":"A price-quantity schedule is plotted with quantity as the horizontal variable and price as the vertical variable, matching the standard supply and demand graph convention."},{"text":"Use price on the x-axis and quantity on the y-axis.","correct":false,"explanation":"This reverses the standard axes for a price-quantity graph. Quantity should be placed on the x-axis and price should be placed on the y-axis."},{"text":"Use quantity on the x-axis and time on the y-axis.","correct":false,"explanation":"Time is not the second variable in a price-quantity schedule. The y-axis should show price, while quantity belongs on the x-axis."},{"text":"Use income on the x-axis and price on the y-axis.","correct":false,"explanation":"Income is not one of the two variables in the schedule described. The point should be plotted using quantity on the x-axis and price on the y-axis."}]},{"id":"1db9bf64-eec8-469f-9c4f-46aac7cb0126","cardType":"basic","points":2,"front":"In the example supply and demand data, where is equilibrium?","back":"About £3.50 and quantity 25.","mcqOptions":[{"text":"About £3.50 and quantity 25.","correct":true,"explanation":"Equilibrium occurs where the supply and demand curves intersect. At approximately £3.50, quantity supplied equals quantity demanded at 25 units."},{"text":"About £2.50 and quantity 35.","correct":false,"explanation":"This selects a lower-price point rather than the curves’ intersection. Equilibrium is about £3.50 and quantity 25, where quantity supplied equals quantity demanded."},{"text":"About £4.50 and quantity 15.","correct":false,"explanation":"This selects a higher-price point at which supply and demand are unequal. The curves intersect at about £3.50 and quantity 25, giving the equilibrium."},{"text":"About £3.50 and quantity 35.","correct":false,"explanation":"The price is read correctly, but the quantity is misread from the horizontal axis. At £3.50, the equilibrium quantity is 25, not 35."}]},{"id":"0b407184-0a56-4ea8-a275-1b58b381a30e","cardType":"basic","points":2,"front":"Why use the same vertical scale for exports and imports on one graph?","back":"It makes the comparison fair and clear.","mcqOptions":[{"text":"It makes the comparison fair and clear.","correct":true,"explanation":"Using one vertical scale means equal graphical distances represent equal values for both series, allowing exports and imports to be compared accurately and easily."},{"text":"It makes the totals larger and clearer.","correct":false,"explanation":"A shared scale does not alter the underlying totals or make them larger. It makes the comparison fair and clear because equal values occupy equal distances."},{"text":"It makes the data more detailed and precise.","correct":false,"explanation":"Using the same scale does not provide additional data or detail. Its purpose is to make the comparison fair and clear without visually exaggerating either series."},{"text":"It makes the units unnecessary and optional.","correct":false,"explanation":"A common scale does not remove the need to label measurement units. It makes the comparison fair and clear by representing both data sets consistently."}]},{"id":"84278810-48a3-4893-9f28-5c2db6f444aa","cardType":"basic","points":2,"front":"What does imports being higher than exports mean?","back":"The UK is buying more from abroad than selling abroad.","mcqOptions":[{"text":"The UK is buying more from abroad than selling abroad.","correct":true,"explanation":"Imports are goods and services purchased from other countries, while exports are sold to them. Higher imports therefore mean the UK buys more abroad than it sells abroad."},{"text":"The UK is selling more to abroad than buying abroad.","correct":false,"explanation":"This reverses the meanings of imports and exports. If imports are higher, the UK is buying more from abroad than it is selling abroad."},{"text":"The UK is buying equally from abroad as selling abroad.","correct":false,"explanation":"Equal buying and selling would mean imports and exports had the same value. Higher imports mean the UK is buying more from abroad than it sells abroad."},{"text":"The UK is producing more goods domestically than selling abroad.","correct":false,"explanation":"Import and export figures describe international purchases and sales, not total domestic production. Higher imports mean the UK buys more from abroad than it sells abroad."}]},{"id":"c25d00ac-5fab-48c1-aa08-61a68eaa5cf5","cardType":"basic","points":2,"front":"Why should you not over-interpret a constructed graph?","back":"It shows a pattern, not necessarily the cause.","mcqOptions":[{"text":"It shows a pattern, not necessarily the cause.","correct":true,"explanation":"A graph can reveal an association or trend between variables, but it cannot by itself establish why that relationship exists or prove causation."},{"text":"It proves a cause, not merely a pattern.","correct":false,"explanation":"A constructed graph may display a relationship, but it cannot prove causation on its own. It shows a pattern, while other evidence is needed to identify the cause."},{"text":"It guarantees a prediction, not merely a possibility.","correct":false,"explanation":"Graphical patterns based on existing data do not guarantee what will happen later. The graph shows a pattern, not necessarily its cause or a certain forecast."},{"text":"It confirms the accuracy, not merely the trend.","correct":false,"explanation":"Constructing a graph does not remove measurement, sampling or plotting errors. It shows a pattern, but neither confirms perfect accuracy nor necessarily explains the cause."}]}]}],"examCountdown":{"examDate":"2027-05-13","paperLabel":"Paper 1"},"heading":"Construction of graphs","title":"Construction of graphs Flashcards","topbar":{"backHref":"/gcse/economics/ocr/flashcards"},"topicSidebar":"$L38"}]}],"topicId":"a7159b8c-c34e-5cf5-b461-6862c7b9a8fc","walled":"$L39"}],"$L3a","$L3b"]