Cumulative Frequency

A

AnnKerzick

Guest
#1
They are total 24 numbers. I dont know how do i calculate first the frequency and then cumulative frequency when their is no duplications in the data set. Need help Thanks.

I did some work
the width is 24 so
2 Power 5 = 24

A website recently reported that salaries of Chief Finance Officers​ (CFOs) ranged from​ $127,735 to​ $209,981 (before​ bonuses). Suppose the data below represent a sample of the annual salaries for 24 CFOs in thousands of dollars.

Using 9 ​classes, construct a cumulative frequency distribution.​ (Use the minimum class​ width, rounded up to the nearest integer. Start the first class at 130​.)

CFO Salary (thousands of dollars) Frequency Cumulative Frequency

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130.8, 131.1, 132.3, 138.1, 140.2, 145.8, 156.1, 159.4, 160.3, 161.4, 163.8, 165.3, 167.5, 168.4, 170.9, 176.4, 179.9, 193.8, 194.5
196.4, 198.8, 201.2, 204.5, 206.4