.5.1 Data presentation and interpretation Flashcards","topicId":"1eabd375-7b2f-4ddf-aa8c-cad85008f049","topicSlug":"data-presentation-and-interpretation-2","cards":[{"id":"749f53de-a433-4300-8051-c3962c12b6f5","cardType":"basic","front":"Why are students' journey-time records single-variable data?","back":"Only one characteristic, journey time, is measured.","points":2,"mcqOptions":null},{"id":"9b0c8530-10a8-4f64-bd76-8691f4bd0aa4","cardType":"basic","front":"Which diagram is usually appropriate for discrete or categorical data?","back":"A bar chart.","points":1,"mcqOptions":null},{"id":"ca9b047a-31a8-4f49-b33b-7d5b908e1b20","cardType":"basic","front":"Which diagram is used for grouped continuous data?","back":"A histogram.","points":1,"mcqOptions":null},{"id":"1aded478-f1d7-4e5a-805a-085071a035fa","cardType":"basic","front":"What does a point on a cumulative frequency graph show?","back":"The number of observations less than or equal to that value.","points":1,"mcqOptions":null},{"id":"e3005bdd-c29d-4f64-ab4a-5021645e0d6a","cardType":"basic","front":"Which five values are used to construct a box plot?","back":"

Minimum and maximum
Lower quartile and upper quartile
Median

","points":3,"mcqOptions":null},{"id":"dbc41632-62f7-45fd-af2f-3e729bb0a9a4","cardType":"cloze","front":"The interquartile range is $\\text{[...]}$.","back":"The interquartile range is $\\boxed{\\operatorname{IQR}=Q_3-Q_1}$.","points":null,"mcqOptions":null},{"id":"19cb3459-bb74-4314-8563-a69cb2b7ed0e","cardType":"basic","front":"What does a longer box in a box plot indicate?","back":"The middle 50% of the data is more spread out.","points":1,"mcqOptions":null},{"id":"e915ce8b-6831-4b46-a7ef-76cd59323c20","cardType":"basic","front":"Why does a higher median not mean that every observation is higher?","back":"The median compares only the distributions' central values.","points":2,"mcqOptions":null},{"id":"35891a2b-6d65-4035-b6bd-93ac30584ba3","cardType":"basic","front":"Why do the bars in a histogram touch?","back":"The horizontal axis is continuous, with no gaps between possible values.","points":2,"mcqOptions":null},{"id":"d0862ac9-812e-416b-a9ae-05972415869b","cardType":"cloze","front":"Frequency density is calculated using $\\text{[...]}$.","back":"Frequency density is calculated using $\\boxed{\\text{frequency density}=\\frac{\\text{frequency}}{\\text{class width}}}$.","points":null,"mcqOptions":null},{"id":"23ec0fee-eb13-43cb-893d-fd36843df3dd","cardType":"cloze","front":"In a histogram, bar [ ] represents frequency.","back":"In a histogram, bar area represents frequency.","points":null,"mcqOptions":null},{"id":"de0e14d9-044a-4d3c-8ac5-378c0ed81e15","cardType":"basic","front":"A class has width 20 and frequency 14. What is its frequency density?","back":"$$\\frac{14}{20}=\\mathbf{0.7}$","points":1,"mcqOptions":null},{"id":"f02b7c6d-273b-4695-9e8e-746fdd7d7b70","cardType":"basic","front":"A histogram class has width 20 and frequency density 1.4. Find its frequency.","back":"$$20\\times1.4=\\mathbf{28}$","points":1,"mcqOptions":null},{"id":"c50b25fd-eca9-4f3a-ba8f-4ac7f73be99a","cardType":"basic","front":"A width-10 bar of height 3 represents frequency 15. What frequency is represented by a width-20 bar of height 2?","back":"The area ratio gives $15\\times\\frac{20\\times2}{10\\times3}=\\mathbf{20}$.","points":2,"mcqOptions":null},{"id":"1cd05e8b-3c8d-4fdf-916b-0e77b3e428a3","cardType":"cloze","front":"A distribution whose two sides are approximately mirror images is [ ].","back":"A distribution whose two sides are approximately mirror

2.5.1 Data presentation and interpretation Flashcards

2.5.1 Data presentation and interpretation Flashcards