1. 0-13: Representing Data

2. 0-13: Representing Data
Frequency Table: Uses tally marks to record and display frequencies.
Make a bar graph to display the data

3. 0-13: Representing Data
Bar Graph: Uses bars representing frequencies to compare data
Step 1: Draw a horizontal & vertical axis. Label the axis and add a title.
Step 2: Draw a bar to represent each sport.

4. 0-13: Representing Data
Cumulative Frequency: The sum of an event frequency and all preceding events
Histogram: A type of bar graph that displays data into intervals
Example 2: Make a histogram of the frequency and cumulative frequency of the following data
Age at Inauguration
40-44
45-49
50-54
55-59
60-64
65-69
U.S. Presidents 2 7 13 12 3

5. 0-13: Representing Data Age at Inauguration 40-44 45-49 50-54 55-59
60-64
65-69
U.S. Presidents 2 7 13 12 3

6. 0-13: Representing Data Age at Inauguration 40-44 45-49 50-54 55-59
60-64
65-69
U.S. Presidents 2 7 13 12 3
Cumulative Freq 9 22 34 41 44

7. 0-13: Representing Data
Line Graph: A graph that shows how data changes over a period of time
Step 1: Draw a horizontal axis and a vertical axis and label them Step 2: Plot the points Step 3: Draw a line connecting each pair of consecutive points

8. 0-13: Representing Data Stem-and-leaf plot
Digits on the smallest place value represent the leaves
Everything else represents the stems
The speeds (in mph) of the 20 fastest land animals are listed below. Use the data to make a stem-and- leaf plot

9. 0-13: Representing Data
Circle Graph: Shows the relationship between parts of the data and the whole
Step 1: Find the ratio that compares each part to the whole
Step 2: Multiply each ratio by 360° to find the degrees of each section.
3/8 ● 360° = 135°
1/8 ● 360° = 45°
2/8 ● 360° = 90°

10. 0-13: Representing Data Box-and-Whisker Plots
The median divides the data set into two equal parts.
We use the median for each of those parts to divide the data set further, into four equal parts.
The values separating these four parts are called quartiles.
Quartiles are shown below for 12 water temperatures
Median of lower part (Q1) = 60.5
Median of upper part (Q3) = 83
Median of data set (Q2) = 72.5

11. 0-13: Representing Data
Assignment
Page P45 – P46
1 – 13, odds