Aim: How do we construct a cumulative frequency table/histogram?
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Transcript of Aim: How do we construct a cumulative frequency table/histogram?
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Aim: How do we construct a
cumulative frequency table/histogram?
![Page 2: Aim: How do we construct a cumulative frequency table/histogram?](https://reader036.fdocuments.us/reader036/viewer/2022082816/56649cf35503460f949c12e6/html5/thumbnails/2.jpg)
To create a Cumulative Frequency Table we must:
• Construct a Frequency table (intervals)• Extend the Table to include a cumulative
frequency column• The C. Freq. Column is calculated by
starting from the bottom and adding each Freq. to the C. Frequency recorded on the previous row.
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Frequency Table
Interval Frequency Cumulative Frequency
91-100 50 81-90 60 71-80 60 61-70 20 51-60 10
10
90
150
200
30
![Page 4: Aim: How do we construct a cumulative frequency table/histogram?](https://reader036.fdocuments.us/reader036/viewer/2022082816/56649cf35503460f949c12e6/html5/thumbnails/4.jpg)
To create a Cumulative Frequency Histogram:
• Construct a Cumulative Frequency table • Draw/Label the Horizontal Axis (intervals)• Draw/Label the Vertical Axis “Cumulative
Frequency” • Graph the Bars (No Gaps)• Last bar should contain the total frequency• Title the Graph …..The words “cumulative frequency” should appear in the title.
![Page 5: Aim: How do we construct a cumulative frequency table/histogram?](https://reader036.fdocuments.us/reader036/viewer/2022082816/56649cf35503460f949c12e6/html5/thumbnails/5.jpg)
Horizontal axis (left to right)
• Label the horizontal axis with the appropriate intervals.
• Name the axis ……Test scores • If the Intervals do not begin at 0
use a “break” symbol on the axis
51-60 51-70 51-80 51-90 51-100
Test Scores (Intervals)
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Vertical Axis (up and down)• Begin at zero
• Number the Vertical Axis.• Label the axis “Cumulative Frequency”
Cum
ulat
ive
Fre
quen
cy
Test Scores(Interval)
150
100
50
0
![Page 7: Aim: How do we construct a cumulative frequency table/histogram?](https://reader036.fdocuments.us/reader036/viewer/2022082816/56649cf35503460f949c12e6/html5/thumbnails/7.jpg)
Cumulative Test Scores Period 6
0
50
100
150
200
250
Test Scores (Intervals)
Cum
ulat
ive
Fre
quen
cy
51-6051-7051-8051-9051-100
Graph it….(no gaps= no gaps)
51-60 51-70 51-80 51-90 51-100
![Page 8: Aim: How do we construct a cumulative frequency table/histogram?](https://reader036.fdocuments.us/reader036/viewer/2022082816/56649cf35503460f949c12e6/html5/thumbnails/8.jpg)
Cumulative Test Scores Period 6
0
50
100
150
200
250
Test Scores (Intervals)
Cum
ulat
ive
Fre
quen
cy
51-6051-7051-8051-9051-100
Graph it….(no gaps= no gaps)
51-60 51-70 51-80 51-90 51-100