UNIMODAL BIMODAL AND SYMMETERIC DISTRIBUTION OF DOT PLOTS WORKSHEET

Problem 1 :

Martha conducted a random survey during lunch. She asked 20 students and 20 teachers how many siblings they have. The survey data are represented in the dot plots below 

Based on the data in the dot plots, fill in the blanks to create a true statement.

1. The range of the data for the survey results for teachers is _________ than the range of the data for the survey results for the students.

2. The mode of the data for the survey results for teachers is _________ than the mode of the data for the survey results for the students.

3. The data for the survey for _________ is more symmetrical than the data for the survey for _________.

4. The median of the data for the survey results for teachers is _________ than the median of the data for the survey results for the students.

5. The greatest number of siblings for teachers is _________ than the greatest number of siblings for students.

Solution

Problem 2 :

Use the following information for questions. Determine if each statement is true or false

1) The range of the data for the heights of softball players is less than the range of the data for the heights of basketball players.

2) The median of the data for the heights of softball players is greater than the median of the data for the heights of basketball players.

Solution

Problem 3 :

Mrs. Khan took a survey in her first and second period classes concerning the number of books that students read last summer.

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

A) The data for 1st period and the data for 2nd period are skewed to the right?

B) The median number of books read last summer in 1st period is greater than the median number of books read last summer in 2nd period.

C) The range of the number of books read last summer in 1st period is equal to the range of the number of books read last summer in 2nd period.

D) The mode number of books read last summer in 2nd period is less than the mode number of books read last summer in 1st period.

Solution

Problem 4 :

The dot plots below represent two sets of data.

Here are three statements about the data.

I. The mode of the data in Set A is equal to the mode of the data in Set B.

II. The range of the data in Set A is less than the range of the data in Set B.

III. The median of the data in Set A is greater than the median of the data in Set B.

Which of these three statements appear to be true?

A) I only     B) I and II     C) II and III     D) III only

Solution