Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The...
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Transcript of Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The...
![Page 1: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/1.jpg)
Ways to Ways to Display Display
DataData
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FrequenFrequency Tablecy Table
![Page 3: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/3.jpg)
A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number.
Data is displayed numerically.
![Page 4: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/4.jpg)
A frequency table is best used to keep track and
organize data!
![Page 5: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/5.jpg)
# of Cats Tally Frequency
0 IIII 4
1 IIII I 6
2 III 3
3 or more
I 1
A frequency table contains 3 columns.
# of Cats in Homes# of Cats in Homes
![Page 6: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/6.jpg)
What type of soda is
your favorite?
Class ExerciseClass Exercise
![Page 7: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/7.jpg)
Choose one of the following….
1. Coke2. Mountain Dew3. Dr. Pepper4. Sprite5. Diet Coke
![Page 8: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/8.jpg)
Now, complete the table. Compare your frequency table with your neighbor’s. Are the same? Any
differences?
![Page 9: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/9.jpg)
Stem-and-Stem-and-Leaf Leaf PlotPlot
![Page 10: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/10.jpg)
A stem-and-leaf plot displays and organizes numerical data by separating the digits of each number into a stem and a leaf.
•The number of students enrolled in a dance class in the past 12 years:
81, 84, 85, 86, 93, 94, 97, 100, 102, 103, 110, and 111.
![Page 11: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/11.jpg)
69, 71, 75, 79, 80, 83, 84, 88, 92, 95, 97, 99
Stem & Leaf Example
Make a stem-and-leaf plot of the exam scores shown below. The first one is done for you.
Stem Leaf
6 9Exam Scores
75 83 99 69 95 80 71 88 92 84 79 97
![Page 12: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/12.jpg)
Compare your stem-and-leaf plot to the one below.
Stem Leaf
6 9
7 1 5 9
8 0 3 4 8
9 2 5 7 9
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Bar Bar GraphGraph
![Page 14: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/14.jpg)
A single bar graph uses the same color or shade of bar to compare amounts, such as number of students per class.
0
15
30
7 86
STUDENTS PER CLASS
Nu
mb
er o
f S
tud
ents
Grade
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Bar Graph Example
A middle school near Athens, has a recycling drive every year. The table shows the results of last year’s drive. Complete the bar graph on your own.
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Compare your bar graph to the one below.
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A double bar graph uses two or more colors or shades of bars and a key to compare amounts, such as the number of boys and girls in each class.
STUDENTS PER CLASS
0
10
20
7 86
Nu
mb
er o
f S
tud
ents
Class Number
GirlsBoys
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HistogrHistogramam
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A histogram is a special kind of bar graph that shows how rangesranges ( or ( or intervals) of dataintervals) of data differ from one another. There are no spaces between the bars of a histogram.
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Number of students receiving grades
A histogram is also used to compare data clearly and efficiently.
![Page 21: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/21.jpg)
Number of students receiving grades
This histogram compare grades on a final exam.
What are the intervals?Letter Grades:
A 90-100
B 80-89
So forth
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Histogram Example
0
1
2
3
4
5
6
Minutes Spent on Homework Histogram
# of Minute
s
Tally Frequency
30-39 2
40-49 3
50-59 1
60-69 130-39 40-49 50-59 60-69
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PictograPictographph
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A pictograph uses pictures or symbols to compare data.
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A pictograph has a key that tells the value of each picture.
KEY
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A pictograph is similar to the bar graph and histogram because it is also used best to compare data.
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Circle Circle GraphGraph
![Page 28: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/28.jpg)
A circle graph shows how a whole circle is broken into parts.
![Page 29: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/29.jpg)
The sum of the parts (percents) in a circle graph must always equal 100%!
30%20%15%5%
20%10%
100%+
![Page 30: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/30.jpg)
A circle graph is used best when comparing data, especially data that involves
percentages.
Sometimes a circle graph is referred to as a pie chart.
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Circle graph Example
1) Find the total.
2) Write a fraction and change each fraction to a percent.
3) Create a key and graph the percentages.
27
15 = 56% 7 = 26% 1 = 4% 4 = 14%27 27 27 27
56%
14%4%
26%
SingleDoubleTripleHome Run
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Line Line PlotPlot
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A line plot uses a horizontal number line and individual data points (usually Xs) to show how the data is grouped.
![Page 34: Ways to Display Data. Frequency Table A frequency table shows how often something occurs. The frequency may be shown by tally marks or the number. Data.](https://reader035.fdocuments.us/reader035/viewer/2022062313/56649cf35503460f949c11e9/html5/thumbnails/34.jpg)
Each X on a line plot stands for one piece of data.
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Line plots are a quick way to determine the mode because it is the number on the scale with the most Xs.
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Outliers, or data items that are much larger or smaller than the rest of the items are easy to spot as well.
Number of Pets in each Household
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Line Line GraphGraph
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Average Daily Temperature for January 1-7 in Degrees
Fahrenheit
A single line graph uses one line to show how something changes over time.
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A multiple line graph compares two or more groups of data during the same time period.
Each group of data will have its own line.
0
3hrs
2hrs
1hrs
1990 1995 2000
Average Studying Time
6th
7th
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A line graph shows trends, or how things change over time.
By looking at the line(s) on a line graph, you can tell whether something is increasing, decreasing or staying the same.
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A steady trend may be used to help predict what will likely happen in the future.