Numbers

 

A line graph may be used to show trends and how data changes over time.  Every line graph has a Title at the top.  Each line graph also has a Vertical Axis (side) and a Horizontal Axis (side).  The vertical axis is called the Scale.  The Scale is the up-and-down number line on the graph.  The line graph below has Test Score percentages listed on the vertical axis.  The horizontal axis on a line graph goes left-to-right.  The graph below lists Weeks 1 through 9 on the horizontal axis.

Let's look at how to read a line graph.  Put your finger over the first red point on the graph below.  Move your finger left along the black line and you should run into the number 98.  This point means 98%.  Now go back to the first red point again and move your finger all the way straight down.  You should run into Week 1.  This first red point means that Week 1 Austin's Spelling Test score was 98%.

What if Austin's score was 97%?  This isn't shown on the graph below but if it were shown, the red point would have been placed between the numbers 96 and 98.  A test score of 97% would not sit directly on a black line but instead it would float between the lines of 96 and 98.

Now it's time for you to try some on your own.  Answer the questions below the graph.

Line Graph

1.  What was Austin's test score Week 2? %

2.  What was Austin's test score Week 3? %

3.  What was Austin's test score Week 4? %

4.  What was Austin's test score Week 5? %

5.  What was Austin's test score Week 6? %

6.  What was Austin's test score Week 7? %

7.  What was Austin's test score Week 8? %

8.  What was Austin's test score Week 9? %

9.  Which week did Austin have the best spelling test score? Week

10.  Which week did Austin have the lowest spelling test score? Week

11.  What is the difference between Weeks 1 and 6? %

12.  What is the difference between Weeks 3 and 4? %

13.  What happened to Austin's score from Week 2 to Week 3?

A.  His score went down.

B.  His score went up.

C.  His score stayed the same.

14.  What happened to Austin's score from Week 5 to Week 6?

A.  His score went down.

B.  His score went up.

C.  His score stayed the same.

15.  What happened to Austin's score from Week 7 to Week 8?

A.  His score went down.

B.  His score went up.

C.  His score stayed the same.

 

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