Describe frequency distributions Flashcards","topicId":"752462a7-4eaf-4c22-8aed-b380c2db1bc7","topicSlug":"describe-frequency-distributions","cards":[{"id":"03ec7046-a59e-4907-9ff6-20a1916b665a","cardType":"basic","front":"Data record the number of goals scored. Is the variable discrete or continuous?","back":"Discrete - the values are separate and counted.","points":1,"mcqOptions":null},{"id":"b9586644-aaa0-4f54-8ef1-6983ebf4af67","cardType":"basic","front":"Data record journey times. Is the variable discrete or continuous?","back":"Continuous - any value within an interval is possible.","points":1,"mcqOptions":null},{"id":"d9acef30-39cb-46c6-a589-a206ab445255","cardType":"cloze","front":"The [ ] of a value or class is its number of observations.","back":"The frequency of a value or class is its number of observations.","points":null,"mcqOptions":null},{"id":"a41717de-358b-41bc-a002-37ea4c70f6b1","cardType":"cloze","front":"A frequency distribution shows how observations are distributed among possible values or [ ].","back":"A frequency distribution shows how observations are distributed among possible values or class intervals.","points":null,"mcqOptions":null},{"id":"c88ba7bc-9c92-4099-bcf1-d704bc653c3d","cardType":"basic","front":"Which four features should be considered when describing a distribution?","back":"

Shape
Centre
Spread
Unusual features

","points":3,"mcqOptions":null},{"id":"b71199f4-44df-4cd5-a8bf-647891938af0","cardType":"basic","front":"A distribution's sides are approximate mirror images around its centre. What is its shape?","back":"Symmetric.","points":1,"mcqOptions":null},{"id":"a0b310e7-c499-4a93-a309-871edd8619bf","cardType":"basic","front":"A distribution has a long tail towards larger values. What is its skew?","back":"Positive skew, or right skew.","points":1,"mcqOptions":null},{"id":"40714600-3a10-4ff8-a54e-ee7a5468d947","cardType":"basic","front":"A distribution has a long tail towards smaller values. What is its skew?","back":"Negative skew, or left skew.","points":1,"mcqOptions":null},{"id":"9e22957f-79ea-4246-b1da-b0c999f052f5","cardType":"cloze","front":"The direction of skew is determined by the direction of the [ ].","back":"The direction of skew is determined by the direction of the long tail.","points":null,"mcqOptions":null},{"id":"a83e4b65-fb16-4c3d-b736-8aefa5aa3edf","cardType":"basic","front":"For a positively skewed distribution, how do the mean and median usually compare?","back":"The mean is greater than the median.","points":1,"mcqOptions":null},{"id":"ff924c72-49e7-4ff1-b2ed-5dee9fd44d0d","cardType":"basic","front":"For a negatively skewed distribution, how do the mean and median usually compare?","back":"The mean is less than the median.","points":1,"mcqOptions":null},{"id":"5d68970e-8377-4d39-899e-74cf4b039dbb","cardType":"basic","front":"A distribution has two clear peaks. How should its shape be described?","back":"Bimodal.","points":1,"mcqOptions":null},{"id":"bf9d65c8-1de5-4b49-a584-033158800ad7","cardType":"basic","front":"What might bimodality suggest about the data?","back":"The data may combine two different groups.","points":2,"mcqOptions":null},{"id":"6782c02c-1708-4d2f-a3d8-c561a693ac83","cardType":"basic","front":"Which measure of centre is usually more representative for skewed data or data with outliers?","back":"The median, because it resists extreme values.","points":2,"mcqOptions":null},{"id":"5d2f3ea6-1130-41f0-beb1-1413d9fb73a6","cardType":"cloze","front":"

2.2.4 Describe frequency distributions Flashcards

2.2.4 Describe frequency distributions Flashcards