Comparing Central Tendency Two Data Sets

The dot plots show the number of miles Nina and Mark walked during a few days in April.

The median number of miles Mark walked is ___________ the median of the number of miles Nina walked.

• greater than

• less than

• equal to

The dot plots show the number of miles Ben and Barbara ran in the month of February.

Which statement is best supported by the information in the dot plots?

• The mode of the number of miles ran by Barbara is greater than the mode number of miles ran by Ben.

• The least number of miles ran by Ben is greater than the least number of miles ran by Barbara

• The range of the number of miles ran by Barbara is greater than the range of he number of the miles ran by Ben

• The distribution of the data is approximately symmetical in both sets of data.

The dot plots show the number of hours two boys played video games each day for 10 days.

Which statement is NOT supported by the information in the dot plots?

• The mode of the number of hours played by Jayden is less than the mode number of hours played by Juan.

• The mean of the number of hours played by Jayden is more than the mean number of hours played by Juan.

• Jayden had a greater range of the number of hours played than Juan.

• The maximum number of hours played by Juan is less than the maximum number of hours played by Jayden.

• bimodal

• uniform

• multiple outlier

• skewed to the right

Which of the following is represented by the histogram?

• Of the 20 riders represented in the graph, over 50% are 30 years of age or older.

• One fourth of the riders represented in the graph are younger than 40 years old.

• Half the riders represented in the graph are between the ages 10-29.

• Six percent of the riders represented in the graph are between the ages 10 and 19.

Which statement is true about the center of distribution?

• The center is best described using the mean, because the distribution is skewed.

• The center is best described using the median, because the distribution is skewed.

• The center is best described by the mean and median, because the distribution is symmetric.

• The center is best described by the outlier, because the distribution is symmetric.

• Class 1

• Class 2

• Class 3

• Class 4

Which type of squirrels are longer on average?

• Red

• Grey

• They're the same

Which group has a greater median reaction time?

• Group A

• Group B

• They're the same

Which of the following statements is true?

• The median shoes sold by Tim was 13 pairs.

• The median shoes sold by Caleb was 2 pairs more than Tim.

• The median shoes sold by Caleb was the same as the median sold by Tim.

• There is not enough information to compare the shoe sales for Caleb and Tim.