Grade 4 - Progress in Mathematics

Update your skills. See page 25.

Surveys and Line Plots

7-4

Use the line plot above to answer each question.

1. How many students spend 2. How many students read fewer
   2 hours reading each day? than 2 hours each day?


2. How many more students spent 4. How many students were
   3 hours reading each d ay, rather surveyed?
   than 4 hours reading each day?

A survey is a way to collect data

by asking a question.

Kay took a survey of her class. She

asked her classmates how many

hours each day they spend reading.

Kay used the results of her

survey to create a line plot.

A line plot shows data by arranging Xs

along a number line.

Kay found the range and the

mode of the data on her line plot.

To find the range, subtract the least value

in the data from the greatest value

in the data: 7
 1  6

So, 6 is the range.

To find the mode, look for the number

that has the greatest number of Xs.

1 is the mode.

Hours Spent Reading

Hours Tally

1 2 3 4 5 6 7

An outlier is a value far

from the rest of the data.

Sometimes a set of data has no

mode or more than onemode.

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X X

1 2 3

X

4

Hours

5 6 7

Hours Spent Reading

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