1. Making a Line Plot Collect data and put in chronological order Determine a scale and intervals If you have a small range, you should probably use intervals of 1 With larger scales, it is best to mark intervals every 2, 5, or 10 numbers. Ex. Scores on a math test Use a scale from 60 to 100 and intervals of 5 Ex. Scores on a math test 63 68 72 74 79 80 80 83 84 84 84 85 88 90 90 90 90 93 95 95 95 97

2. Making a Line Plot Draw a horizontal line and mark the intervals Ex. Scores on a math test 63 68 72 74 79 80 80 83 84 84 84 85 88 90 90 90 90 93 95 95 95 97 60 65 70 75 80 85 90 95 100

3. Making a Line Plot Mark an X above the number for each data point If a number is repeated, place one X above the other Ex. Scores on a math test 63 68 72 74 79 80 80 83 84 84 84 85 88 90 90 90 90 93 95 95 95 97 60 65 70 75 80 85 90 95 100 X XX X XX X X X X X X XX X X X XX XXXX X

4. Making a Line Plot Count the number of data points and count the number of X’s to make sure you plotted each point! Ex. Scores on a math test 63 68 72 74 79 80 80 83 84 84 84 85 88 90 90 90 90 93 95 95 95 97 60 65 70 75 80 85 90 95 100 X XX X XX X X X X X X XX X X X XX XXXX X 22 data points 22 X’s

5. Reading a Line Plot Understand the scale and interval Ex. This line plot has intervals of 2, so an X that falls between numbers would represent the median of those numbers. An X between the 6 and 8 would represent “7” 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X XX

6. Reading a Line Plot Finding the Minimum Minimum – smallest value 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X XX The minimum is the number represented by the first X 1 Do NOT just look at the numbers on the scale. The Minimum is NOT 0 The MINIMUM is 1

7. Reading a Line Plot Finding the Maximum Maximum – greatest value 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X XX The maximum is the number represented by the last X 15 Do NOT just look at the numbers on the scale. The Maximum is NOT 16 The MAXIMUM is 15

8. Reading a Line Plot Answering Questions 1.What is difference between the greatest number and the smallest number? 2.What is the combined total of the three smallest numbers? 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X X X

9. Reading a Line Plot Answering Questions 1.What is difference between the greatest number and the smallest number? 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X X X Greatest Smallest 15- 1 = 14

10. Reading a Line Plot Answering Questions 2. What is the combined total of the three smallest numbers? 0 2 4 6 8 10 12 14 16 XXX X XX X X X X X X X The three smallest Numbers. 1 + 2 + 4 + 4= 11