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- 1. Multiple Choice
What is the interquartile range of the data represented in the box plot below?30506070 - 2. Multiple ChoiceWhat is the median of the data represented in the line plot below?1111.51212.5
- 3. Multiple ChoiceFor the data set below, which of the following measures is greatest?
{20, 25, 30, 31, 32, 45, 45, 80}meanmedianrangemode - 4. Multiple ChoiceThe bar graph shows the number of baskets scored by four students at a basketball competition.
What is the mode of the data?20 baskets30 baskets40 baskets45 baskets - 5. Multiple ChoiceHow many more baskets than Barry did Kallie score?5 baskets10 baskets15 baskets20 baskets
- 6. Multiple ChoiceWhat is the mean for the data set below?
(14, 54, 54, 35, 25, 34, 21, 23)25.129.532.540.0 - 7. Multiple ChoiceHow many values are greater than 40?2091
- 8. Multiple ChoiceThe _____ organizes data by recording all the values observed in a sample as well as how many times each value was observed.distribution of a sampleorganizational structuredata sampleman in the yellow hat
- 9. Multiple ChoiceAll methods used for visualizing distributions are based on which of the following?Make a mark that indicates how many times each value occurred in the data set.Pick a graph and summarize the data using that graph.Make a dotplot of the data.Make a histogram of the data.
- 10. Multiple ChoiceWhich of the following questions should be asked when developing an understanding of data?How were the variables measured?What variables were measured?Who collected the data?All of these questions are important
- 11. Multiple ChoiceWhich of the following is used to summarize two potentially related categorical variables?A two-way tableHistogramFrequency TableStacked table
- 12. Multiple ChoiceIf a sample of people were asked how many hours of TV they watched in a typical week, what shape would the data distribution be expected to have?UnimodalRight skewedLeft skewedbimodal
- 13. Multiple ChoiceWhat is the first step in almost every investigation of data?Determine if the data contain any outliers.Make an appropriate graph.Describe the variability.Determine the center.
- 14. Multiple ChoiceTo compute the variance, what should one do?Take the square root of the standard deviation.Divide the standard deviation by nminus−1Square the standard deviation.Double the standard deviation
- 15. Multiple ChoiceA standard unit measures which of the following?The interval within which approximately 68% of the observations fallThe magnitude of the standard deviationHow many standard deviations away an observation is from the medianHow many standard deviations away an observation is from the mean
- 16. Multiple ChoiceFor what purpose is the median used?To give a typical data setTo measure variationTo give the spread of distributionNone of the above
- 17. Multiple ChoiceIn a right-skewed distribution, which of the following is true?The mean tends to be less than the median.The mean tends to be greater than the medianThe mean and median are approximately the sameNone of these
- 18. Multiple ChoiceIn a boxplot, the whiskers extend to which of the following?To the most extreme values that are not potential outliersTo the first and third quartilesThe smallest and largest values in the data setNone of these
- 19. Multiple ChoiceBoxplots are NOT recommended for use with which of the following types of distributions?Bimodal or multimodalskewedsymetricalunimodal
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