9-6 Dot Plots Review

What is the median number of goals scored?

• 3

• 3.5

• 4

• 5

What is the spread of the data set?

How much larger is the spread of the hours playing video games than the hours exercising?

The dot plots show the heights of seventh graders in two classes. Which statement is best supported by these data?

• The distributions of the data of both classes are approximately symmetrical

• The median height of the students in Mr. Carter's class is less than the median height of the students in Mrs. Petunia's class

• Mr. Carter's class has a greater range in player heights than Mrs. Petunia's class has

• The mode height of the students in Mr. Carter's class is less than the mode height of students in Mrs. Petunia's class

Answer explanation

To find the range you need to subtract the highest value and the lowest value for each class

Tags

dot plots

teks 7.6g

range

median

mode

The dot plots show the number of pets students have in two classes. Which statement is best supported by the data?

• The mean of Mrs. Jones' class is higher than the mean of Mr. Carson's class.

• The range of Mr. Carson's class is lower than the range of Mrs. Jones' class.

• The median of Mr. Jones' class is equal to the median of Mr. Carson's class.

• The mode of Mrs. Jones' class is higher than the mode of Mr. Carson's class.

Answer explanation

Remember, the median is the middle data point

Tags

dot plots

teks 7.12a

mean

median

mode

The dot plots show the grades on a test of two different classes. Which statement is best supported by the data?

• The distribution of both sets of data are mostly symmetrical

• The mode of Ms. Henry's class is lower than the mode of Mrs. Clarence's class

• The median of Ms. Henry's class is higher than the median of Mrs. Clarence's class

• Mrs. Clarence's class has a higher range of test scores than Ms. Henry's class

Answer explanation

The mode is the option that has the most dots (data points) associated with it

Tags

dot plots

teks 7.12a

median

mode

range

The dot plots show the prices for different baits at two different shops. Which statement is best supported by the data?

• The distribution of Grey's Baits is mostly symmetrical

• The mode of Grey's Baits is less than the mode of Bait and Tackle

• The range of Bait and Tackle is less than the range of Grey's Baits

• The median of Bait and Tackle is greater than the median of Grey's Baits

Tags

median

range

mode

dot plots

teks 7.12a

The dot plots show the number of video games owned by both boys and girls. Which statement is best supported by the data?

• The mean of video games owned by Boys is less than the mean of video games owned by Girls

• The range of video games owned by Boys is greater than the range of video games owned by Girls

• The mode of video games owned by Boys is greater than the mode of video games owned by Girls

• The median of video games owned by Boys is greater than the median of video games owned by Girls

Tags

dot plots

teks 7.12a

mean

median

mode

Here are three statements about the height of students in two classes.

I. The median of the two classes is equal

II. The distribution of heights for Mr. Carter's class appears to be symmetrical

III. The mode of Mrs. Petunia's class is less than the mode of Mr. Carter's class

Which of these 3 statements appear to be true?

• I, II, and III

• I and II

• II and III

• III only

Tags

dot plots

teks 7.12a

mode

median

symmetry

Here are three statements about the number of pets per household in two different classes.

I. The range of pets in Mrs. Jones' class is less than the range of pets in Mr. Carson's class

II. The mode of pets in Mrs. Jones' class is greater than the mode of pets in Mr. Carson's class

III. The median of pets is equal in both classes

Which of these statements appear to be true?

• I and III

• III only

• I and II

• I, II, and III

Tags

dot plots

teks 7.12a

mode

range

median