0-13: Representing Data

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

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.

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

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

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

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

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

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°

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 56 58 58 63 65 71 74 78 82 84 85 86 Median of lower part (Q1) = 60.5 Median of upper part (Q3) = 83 Median of data set (Q2) = 72.5

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