Aim how do we construct a cumulative frequency table histogram
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Aim: How do we construct a cumulative frequency table/histogram? PowerPoint PPT Presentation


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Aim: How do we construct a cumulative frequency table/histogram?. To create a Cumulative Frequency Table we must:. Construct a Frequency table (intervals) Extend the Table to include a cumulative frequency column

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Aim: How do we construct a cumulative frequency table/histogram?

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Aim how do we construct a cumulative frequency table histogram

Aim: How do we construct a cumulative frequency table/histogram?


To create a cumulative frequency table we must

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.


Frequency table

Frequency Table

200

150

90

30

10


To create a cumulative frequency histogram

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.


Horizontal axis left to right

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)


Vertical axis up and down

Vertical Axis (up and down)

  • Begin at zero

  • Number the Vertical Axis.

  • Label the axis “Cumulative Frequency”

150

100

50

0

Cumulative Frequency

Test Scores(Interval)


Graph it no gaps no gaps

Graph it….(no gaps= no gaps)

51-60 51-70 51-80 51-90 51-100


Graph it no gaps no gaps1

Graph it….(no gaps= no gaps)

51-60 51-70 51-80 51-90 51-100


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