AP Stats Unit

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

• A

• B

• C

• D

• E

Which of the following is true?

• The distributions of pulse rates from after the workout is approximately normal.

• The distribution of pulse rates from after the workout is skewed right.

• The distribution of pulse rates from after the workout is skewed left.

• The distribution of pulse rates from after the workout is approximately uniform.

Which of the following is true based on the graph?

• The number of men who preferred sports is greater than the number of women who preferred sports.

• The number of women who preferred dance is greater than the number of men who preferred dance.

• The proportion of women who preferred TV is greater than the proportion of men who preferred TV.

• The proportion of men who preferred sports is greater than the proportion of women who preferred sports.

Arrange the histograms in order from least standard deviation to greatest standard deviation.

• A, B, C

• C, B, A

• B, C, A

• B, A, C

Which type of graph is this?

• Segmented Bar Graph

• Histogram

• Cumulative Graph

• Pie Chart

The histogram above shows the number of minutes needed by 45 students to finish playing a computer game.

Which of the following statements is correct?

• The distribution is skewed to the right.

• The distribution is skewed to the left.

• The distribution appears to be normal.

• The distribution appears to be chi-square.

• The distribution appears to be uniform.

The back-to-back stem-and-leaf plot below gives the percentage of students who dropped out of school at each of the 49 high schools in a large metropolitan school district. Which of the following statements is NOT justified by these data?

• The drop-out rate decreased in each of the 49 schools between the 1989-90 and 1992-1993 school years.

• For the school years shown, most students in the 49 schools did not drop out of high school.

• In general drop-out rates decreased between the 1989-90 and 1992-1993 school years.

• The median drop-out rate of the 49 high schools decreased between the 1989-90 and 1992-1993 school years.

• The spread between the schools with the lowest drop-out rates and those with the highest drop-out rates did not change much between the 1989-90 and 1992-1993 school years.

Name the sampling method:

Interview every 10th student who enters the school in the morning.

• simple random

• voluntary response

• systematic

• convenience