7.12A Dots Plot comparison

Look at the two sets of data.

How would you describe the shape of each data set?

Drag and drop the words to complete the sentences.

Data Set A is ​ ​ (a)   . Data Set B is ​ ​ (b)  

• symmetric
• left skewed
• right skewed

The principal at a middle school was concerned about the number of absences during the fall semester. She selected a group of 20 students to experiment with a "phone-buddy" system for preventing absences during the spring semester. The dot plots show the number of absences for each 20 students in each semester.

Identify where the statements about the ranges of data for the two semesters are TRUE or FALSE.

A. The range in fall absences was 2 more than the range in spring absences. ​ (a)  

B. The range in the fall absences was 1 more than the range in the spring absences.​ (b)  

C. The range in the spring absences was 2 more than the range in the fall absences. ​ (c)  

D. The range in spring absences was 3 more than the range in the fall absences​ (d)  

• FALSE
• TRUE

Researchers at a zoo recorded the number of hours that the gorillas in two groups slept at night. The dot plot show the result.

Compare the data in the dot plots. Choose the correct answer from each drop-down menu to complete the sentence.

The distribution of the data for both groups is ​ (a)   and both groups have the same ​ (b)   .

• Asymmetrical
• range
• symmetrical
• mode
• median

A scientist measured the weights of squirrels in two populations. The dot plots display data from each population.

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

• The two populations have different mode weights.

• The two populations have different median weights.

• The data for the two populations have different skews.

• The data for the two populations have different ranges.

Which statement correctly compares these two data sets?

• The median of the data set is the same for both data sets.

• The mode of the data set is the same for both data sets.

• The range of the data set is the same for both data sets.

• The distribution of the data is symmetrical for both data sets.