The following data set represents the lifetime of a sample o

The following data set represents the lifetime of a sample of AA batteries(measured in hours). Construct a frequency distribution for the data. Also report the relative frequencies for each class of your distribution.

381, 225, 482, 580, 506, 110, 403, 180, 406

499, 264, 483, 380, 531, 430, 419, 564, 401

220, 698, 284, 340, 329, 341, 400, 387, 300

462, 280, 475, 427, 420, 509, 416, 622, 554

540, 336, 106, 418

Solution

If interval is 100-200, the data value 200 is included in next class.

Following table shows the frequency distribution and relative frequencies :

Interval frequency (f) Relative Frequency (f/N)
100-200 3 0.075
200-300 5 0.125
300-400 8 0.2
400-500 15 0.375
500-600 7 0.175
600-700 2 0.05
Total N=40
The following data set represents the lifetime of a sample of AA batteries(measured in hours). Construct a frequency distribution for the data. Also report the

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