Compare Distribution

• A

• B

• C

• D

• only one of the data sets is symmetric
• the median in 1st period is greater than the median in 5th period
• the highest test score is the same in both classes
• the interquartile range is larger in 1st period than in 5th period

Which box and whisker plot has the highest median?

• Top plot

• Bottom plot

• A

• B

• C

• D

Students in a statistics class participated in a project in which they attempted to estimate the true mean height of all students in their large high school. The students were split into 4 groups. Each group had their own sampling method, and they used it to select a sample each day for 50 days. Shown above are the estimates based on their 50 samples. After the samples were collected and the means were plotted the teacher visited the school nurse who told her that the true mean height of all students in the school is 67.5 inches. Which group produced sample statistics that estimated the true value of the parameter with relatively low bias and low variability?

• Group 1

• Group 2

• Group 3

• Group 4

• A

• B

• C

• D

• F

• G

• H

• J

Which is a true statement based on the box plots above

• The data for Team B have the greater range.

• The data for Team A are more symmetric.

• The data for Team B have the greater interquartile range.

• The data for Team A have the greater median.

Which is a true statement based on the dot plots above?

• Set B has the greater range

• Set B has the greater median

• Set B has the greater mean

• Set A is less symmetric that Set B

What is the difference in medians of the two box plots?

• 3

• 4

• 5

• 2