Construct relative frequency, cumulative frequency, and cumulative relative freq

Question

Construct relative frequency, cumulative frequency, and cumulative relative frequency distributions. (Round "Relative Frequency" and "Cumulative Relative Frequency" to 2 decimal places.)

What percentage of the observations are at least 7 but less than 9? (Round your answer to the nearest whole percent.)

What percentage of the observations are less than 9? (Round your answer to the nearest whole percent.)

Before plotting the points, round the "Relative Frequency" to 2 decimal places.

Click the Plotter tool and drag the first point you want to plot onto the grid. Continue clicking and dragging the plotter tool until you have identified all of the necessary points for this line. To earn full credit for this graph, you must plot all required points for sample mean.

Once all points have been plotted, click on the line (not individual points) and a tool icon will pop up. You can use this to enter exact co-ordinates for your points as needed.

Consider the following data set:

Explanation / Answer

a)

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b)

c-1)

Number of observations = 5

Number of observations are = 8 + 4 + 5 = 17

d-1) What percentage of the observations are at least 7 but less than 9?

Percentage of observation = 56.67%

d-2) What percentage of the observations are less than 9?

Percentage of observation = 56.67%

  Class Frequency   A. 3 up to 5 8   B. 5 up to 7 4   C. 7 up to 9 5   D. 9 up to 11 6   E. 11 up to 13 4   F. 13 up to 15 3       Total 30

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