The following are raw scores from data you collected: 58 70 68 59 62 47 90 57 45
ID: 2930556 • Letter: T
Question
The following are raw scores from data you collected:
58 70 68 59 62 47 90 57 45
68 93 83 45 48 55 32 58 36
63 71 60 41 65 84 42 40 87
75 81 80 61 72 76 73 52 80
If you had to group the above raw scores into a frequency distribution of approximately 10 intervals of equal width, (Note: you can answer the questions without rearranging the numbers into a frequency table. Reason it out.)
The value of i (interval width) is:
From the information given above , to calculate central tendency for the above frequency distribution, one would probably use the:
From the information given in the first question, if the lowest score in the above distribution is used as the lower limit for the lowest class interval, the lowest class interval range would be:
5.5.Explanation / Answer
Minimum value = 32
Maximum value = 93
Interval count = 10
Interval width, i = 93-32/10 = 61/10 = 6.1 , so we will take 6 as inteval width.
Mean will be the best to calculate central tendency.
Lowest class interval range = [32,32+6] = [32,38]
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