Weight of 15 persons is as follows:
Weight (kg) 20 28 34 39 42 50 53 54 59 64 72 74 74 78 79
Find out mean weight, using Direct Method as well as Short-cut Method.
(hint.
ans: - Weighted Mean = 54.67 kg)
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Answered by
28
Answer:
Mean = sum of observations/total number of observations
=20+28+34+39+42+50+53+54+59+64+72+74+74+78+79/15
= 820/15
=54.66
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Answered by
16
Answer:
mean by step deviation in ungrouped data
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