CC Math 1A Statistics Test Review Name: _____________________________1. The table shows the cats that participated in a pet show. What is the median weight of the cats?

a. 7 lbsb. 7.5 lbsc. 8 lbsd. 16 lbs

2. The table shows the results of 4 equally-sized classes of students who took the same test. Anyone who scores lower than 70 will fail the test. Which of the classes is most likely to have no one fail the test? a. Class 1b. Class 2c. Class 3d. Class 4

3. The box plot shows the scores of 10 students in 4 different subjects. Which statement is true?

a. The interquartile range of scores of students in science and English is the same.

b. The interquartile range of the scores of students in social science and math is the same.c. The interquartile range of the scores of students in social science is greater than that in science.d. The interquartile range of scores of students in science is greater than that in math.

4. Use the frequency table to determine how many students received a score of 60 or better on an English exam.

a. 8 studentsb. 9 studentsc. 14 studentsd. 22 students5. Find the range of the data. Scores: 90, 89, 87, 79, 89, 84, 80, 85, 85, 79a. 11b. 7c. 12d. 156. What percentage of students owned 30 baseball cards?

a. 20%b. 10%c. 8%d. 80%7. Ms. Brodie drew two box-and-whisker plots to represent her students’ scores on the mid-year test and the final exam. What do the plots tell you about the progress of Ms. Brodie’s class?

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 8. Mr. Tucker’s class had an average of 78 points with a standard deviation of 4 points. Which class was more consistent with their test scores? How do you know?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

9. Sarah has been clothes shopping each Saturday for the past 6 weeks. She spent the following amounts: $109, $72, $99, $15, $99, and $89.

a. Calculate the mean and median of Sarah’s purchases.Mean: Median:b. Which measure of central tendency would Sarah tell her parents to convince them that she is not spending too much money on clothes? Explain.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________c. Which value would Sarah tell her parents to convince them that she needs an increase in her allowance? Explain.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

10. The data set gives the scores of seven people on a history test. Which correctly gives the standard deviation of the data set? {70, 72, 80, 85, 89, 94, 98}a. 9.8 b. 3.1 c. 9611. The table below shows the area of several states.

Delaware has an area of 2,000 square miles. Which is true if Delaware is included in the data set?a. The mean increases.b. The range decreases.c. The interquartile range decreases. d. The standard deviation increases. 12. An elevator can hold a maximum of 1,500 pounds. Eight people need to use the elevator. Bill had some measures from the data set of how much each person weighed. Which measure would be most useful to determine if the people can safely use the elevator?a. mean b. median c. mode d. interquartile range

13. While playing a board game that uses a spinner to determine the number of spaces that a game piece advances, Herman and Maddy kept count of the number of times that the spinner landed on each number. They made the following chart during the game.

Which dot plot best represents the distribution of spin results during the game?

14. The daily high air temperature was recorded in two cities for two weeks. The temperatures, in degrees Fahrenheit are shown below.Kepler: 76, 79, 85, 88, 93, 94, 90, 84, 82, 86, 90, 94, 96, 91Newton: 72, 73, 68, 75, 80, 85, 94, 99, 102, 90, 84, 77, 70, 65 Which city had the greater mean temperature over the two weeks?a. Kepler b. Newton c. The mean temperatures were equal d. Not enough information15. For the data set shown, which measure is the greatest? {5, 6, 6, 8, 9, 10}a. Mean b. Median c. Mode d. Range16. Two histograms are shown below:

Which is most likely true about the data?a. The ranges of the data sets are the same. b. The standard deviation of the data sets is the same.c. The outliers in Histogram 2 affect the median more than the mean.d. The mean in Histogram 2 is smaller than the mean in Histogram 1.

17. A class survey asked students how many first cousins they have. The responses are listed below.6, 2, 0, 9, 0, 6, 1, 4, 4, 5, 1, 3, 8, 9, 4, 8, 7

Which histogram best represents the results of the survey?

18. Jordan and Alex are pitchers for the baseball team and are being evaluated by the coach. The speeds in miles per hour of each of their practice pitches are shown below.Which of the following statements is true?a. Jordan has a lower mean speed.b. Jordan has a greater range of speeds.c. Jordan has a lower median speed.d. Alex’s median speed is higher than Jordan’s mean speed.

19. The Fish and Wildlife Department kept track of the number of boats that passed a point on the river each day for two weeks. The data are listed below.12, 24, 9, 3, 11, 18, 14, 18, 22, 25, 12, 12, 5, 16 In order to compile the data into a bow plot, the staff determined the lower quartile to be 11, the median to be 13, and the upper quartile to be 18. Which box plot best represents the collected data?

20. A baker recorded the number of batches of cookies he made on each of seven days. He baked a different number of batches of cookies each day. This box-and-whisker plot summarizes his data.

The baker baked 20 batches of cookies on the eighth day. He redraws the box-and-whisker plot to include his data. Which statement comparing the new box-and-whisker plot to the original box-and-whisker plot is NOT true?a. The median increased.b. The lower extreme increased.c. The upper extreme increased.d. The value of the interquartile range increased.