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1. Question: In a study about political preferences, a researcher randomly selected an equal number of men and women to survey.

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2. Question: A survey was given where students in a class were asked to state their eye color.

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3. Question: Matthew wants to estimate the mean height of clients attending his store. He records the heights of 100 randomly selected clients attending the store. What is the population?

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4. Question: To study the eating habits of all athletes in his school, Christopher obtains a list of the athletes, divides the list into 5 groups, and collects data from several of these groups. Which type of sampling is used?

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5. Question: In order to study the mean blood pressure of people in his town, Richard samples the population by dividing the residents by age and randomly selecting a proportionate number of residents from each age group. Which type of sampling is used?

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6. Question: A small startup company wishes to know how many hours, per week, that its employees spend commuting to and from work. The number of hours for each employee are shown below. Construct a frequency table for grouped data using four classes.

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7. Question: The frequency table below shows the ages of the students in an astronomy class. Complete the Relative Frequency column of the table.

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8. Question: A group of students were surveyed about the number of times they went to a movie theater last year. Their responses are summarized in the relative frequency table below. What is the missing relative frequency?

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9. Question: The values and relative frequencies for a set of data are shown below. Complete the cumulative relative frequency table.

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10. Question: A data set is summarized in the frequency table below. Using the table, determine the number of values less than or equal to 7.

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11. Question: Describe the shape of the given histogram.

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12. Question: A set of data is summarized by the stem and leaf plot below.

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13. Question: Find the median for the following set of data: 13, 26, 35, 44, 38, 12, 47, 23, 36

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14. Question: The following is a data set of the average weekly number of cups of coffee consumed by employees in an office. Find the mean and median and determine if the mean or median is the better measure of central tendency.

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15. Question: If the median of a data set is 13 and the mean is 13, which of the following is most likely?

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16. Question: Given the following box-and-whisker plot, decide if the data is skewed or symmetrical.

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17. Question: The following data values represent the daily amount spent by a family during a 5-day summer vacation. Find the standard deviation of this dataset.

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18. Question: The following data set represents the ages of all six grandchildren in a family. Find the variance for this data set of ages.

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19. Question: Which of the data sets represented by the following histograms has the smallest standard deviation?

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20. Question: The five-number summary for a set of data is given below. Using the interquartile range, which of the following are outliers?

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21. Question: The box-and-whisker plot shows the number of pigeons spotted by visitors at the park during the last weekend. What is the range of the data?

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22. Question: A deck of cards contains red cards numbered 1,2,3,4,5,6 and blue cards numbered 1,2,3,4. Let R be the event of drawing a red card, B be the event of drawing a blue card, E be the event of drawing an even-numbered card, and O be the event of drawing an odd card. Drawing the blue 4 is an example of which of the following events?

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23. Question: A deck of cards contains red cards numbered 1,2,3,4, blue cards numbered 1,2,3,4,5 and green cards numbered 1,2,3,4,5,6,7,8,9,10. If a single card is picked at random, what is the probability that the card is red?

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24. Question: Which of the pairs of events below is dependent?

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25. Question: Fill in the following contingency table and find the number of students who both go to the beach AND go to the mountains.

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26. Question: A study took a random sample of students and asked them how many hours they studied and how many hours they played video games before a test. Is the study observational or experimental? If it is an experiment, what is the controlled factor?

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27. Question: A survey was given where students in a class were asked to state their birthplace. What is the level of measurement of the data?

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28. Question: Matthew wants to estimate the mean height of students attending his college. He records the heights of 50 randomly selected students attending the college. What is the sample?

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29. Question: To study the height of all the students in his school, Christopher records the heights of all the students in his class. Which type of sampling is used?

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30. Question: In order to study the mean blood pressure of people in his town, Richard samples the population by dividing the residents by age and randomly selecting a proportionate number of residents from each age group. Which type of sampling is used?