1. Lesson 12.1/12.5 Line Plots/Line Graphs
Tuesday, March 7
Lesson 12.1/12.5 Line Plots/Line Graphs

2. Line Plots/Line Graphs
Objective: To construct and analyze line plots and line graphs.

3. Line Plots/Line Graphs
A line plot is a visual display of a distribution of data values where each data value is shown as a dot or other mark. Line plots are also known as dot plots.

4. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 1 – Draw a number line from the lowest to highest number in the data set.
Number of Magazines Sold

5. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 1 – Draw a number line from the lowest to highest number in the data set.
Number of Magazines Sold

6. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 2 – Place an “x” above the value on the number line for each value in the data set.
Number of Magazines Sold

7. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 2 – Place an “x” above the value on the number line for each value in the data set.
Number of Magazines Sold

8. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 3 – Label the line plot.
Number of Magazines Sold

9. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. How to make a line plot. Step 3 – Label the line plot.
Number of Magazines Sold

10. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data. Can you describe the data in this line plot?
Number of Magazines Sold

11. Line Plots/Line Graphs
The results of a class survey are listed below. Make a line plot with the data.
14 responded. No one sold more than 25 magazines and the most common number sold is 20, which is the mode.
Number of Magazines Sold

12. Line Plots/Line Graphs
In a class survey students estimated the length of the classroom. Make a line plot for the data.

13. Line Plots/Line Graphs
In a class survey students estimated the length of the classroom. Make a line plot for the data.
Can you describe the data in this line plot?

14. Line Plots/Line Graphs
In a class survey students estimated the length of the classroom. Make a line plot for the data.
25 students made an estimate. The lowest estimate was 10 and highest was 25. The most common estimate was 15, which is the mode.

15. Line Plots/Line Graphs
Make a line plot for the data. Find the median, mode, range and any outliers. Then describe the data.

16. Line Plots/Line Graphs
Make a line plot for the data. Find the median, mode, range and any outliers. Then describe the data.
Median: 0, mode: 0, range: 6, outlier:6
There were 15 tornadoes. The median indicates half the number of tornadoes were greater than zero and half were zero.

17. Line Plots/Line Graphs
A line graph is used to show how a set of data changes over a period of time.

18. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 1 – Draw a large “L” to
represent the “x” and “y” axis of the graph.

19. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 1 – Draw a large “L” to
represent the “x” and “y” axis of the graph.

20. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 2 – Label and list the time data
on the “x” axis.

21. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 2 – Label and list the time data
on the “x” axis.

22. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
Note – the “x” axis does not have
to start at zero.

23. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 3 – The other data set will
be labeled and listed along the “y” axis.
Decide upon a consistent interval.

24. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 3 – The other data set will
be labeled and listed along the “y” axis.
Decide upon a consistent interval.

25. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
Note – the “y” axis should start at
zero, but many line graphs do not.

26. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 4 – Plot and connect the
data points.

27. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 4 – Plot and connect the
data points.

28. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 5 – Title the graph.

29. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
How to Construct a Line Graph.
Step 5 – Title the graph.

30. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
Describe the data.

31. Line Plots/Line Graphs
Make a line graph of the Earth’s population. Describe the change in Earth’s population from 1750 to 2000.
The Earth’s population is
increasing. There was a sharp
increase beginning in 1950.

32. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Step 1 – ?

33. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Step 2 – ?

34. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Step 3 – ?

35. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Step 4 – ?

36. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Step 5 – ?

37. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to 2010.
Describe the graph.

38. Line Plots/Line Graphs
Make a line graph of the Data. Describe the change in the number of building permits filed from 2005 to The number of building permits filed is decreasing. A sharper decrease occurred in 2007.

39. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales?

40. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales? The sales of skateboards is increasing.

41. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales? Can you predict how many skateboards will be sold in ‘15?

42. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales? Can you predict how many skateboards will be sold in ‘15? About 475

43. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales? Can you predict how many skateboards will be sold in ‘19?

44. Line Plots/Line Graphs
What does the graph tell you about the skateboard sales? Can you predict how many skateboards will be sold in ‘19? About 600

45. Line Plots/Line Graphs
The line graph shows the weight of a kitten over several weeks. Describe the trend.

46. Line Plots/Line Graphs
The line graph shows the weight of a kitten over several weeks. The weight of the kitten is increasing over time.

47. Line Plots/Line Graphs
The line graph shows the growth of a plant over several weeks. Describe the trend.

48. Line Plots/Line Graphs
The line graph shows the growth of a plant over several weeks. The height of the plant is increasing over time.

49. Line Plots/Line Graphs
The line graph shows the growth of a plant over several weeks. Can you predict how tall the plant will be after 7 weeks?

50. Line Plots/Line Graphs
The line graph shows the growth of a plant over several weeks. Can you predict how tall the plant will be after 7 weeks? About 11 inches

51. Line Plots/Line Graphs
Agenda Notes Skills Practice 12.1/12.5 Due Thursday, March 10 MAP Testing Tomorrow! Ch11/12 Test –Friday, Mar 17 Retakes after school on Thursday