10.5 Dot Plots, Stem-and-Leaf Plots

10.5 Dot Plots, Stem-and-Leaf Plots

by Regina Jackson

Multiple Choice

Which is the correct way to find the median of a data set?

• add all the numbers and divide by the number of data pieces

• put the numbers in numerical order and find the one in the middle

• identify which numbers occurs the most

• subtract the lowest value from the highest value

Multiple Choice

Which is the correct way to find the mode of a data set?

• add all the numbers and divide by the number of data pieces

• put the numbers in numerical order and find the one in the middle

• identify which numbers occurs the most

• subtract the lowest value from the highest value

Multiple Choice

Which is the correct way to find the mean of a data set?

• add all the numbers and divide by the number of data pieces

• put the numbers in numerical order and find the one in the middle

• identify which numbers occurs the most

• subtract the lowest value from the highest value

Multiple Choice

Which is the correct way to find the range of a data set?

• add all the numbers and divide by the number of data pieces

• put the numbers in numerical order and find the one in the middle

• identify which numbers occurs the most

• subtract the lowest value from the highest value

​Dot Plots

​Shows the frequency of a set of data using a number line.

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​Dot plots compare small amounts of categorical data.

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Each dot represents 1 item in the data set.

Multiple Choice

How many times did the team score 6 runs?

• 2 times

• 3 times

• 4 times

• 5 times

Multiple Choice

What is the mode of the data?

• 4

• 5

• 6

• 7

​Stem-and-Leaf Plots

​A stem and leaf plot is a table used to display data. The 'stem' is on the left and displays the first digit or digits. The 'leaf' is on the right and displays the last digit.

​Stem-and-Leaf Plots

A stem and leaf is a table used to display data. The 'stem' is on the left and displays the first digit or digits. The 'leaf' is on the right and displays the last digit.

For example, 30 and 32 can be displayed together on a stem and leaf as 3 | 0,2.

Multiple Choice

What is the mean value for this data set?

Round your answer to the nearest tenths place.

• 26.8

• 27

• 27.2

• 27.4