(d) The mean weight of five students is 51 kg and the mean weight of four students is 54
kg. The mean weight of nine students will be -
Answers
Answered by
7
Mean weight of 5 students = 51 kg
Their total weight = 51 * 5 = 255
Mean weight of next 4 students = 54 kg
Their total weight = 216 kg
Therefore, Total weight of all 9 students
= 255 + 216
= 471 kg
Mean
= sum of observations / their number
= 471 / 9
= 52.33 ( approximately)
Answered by
1
Answer-
between 52 kg and 53 kg,
52.33(approximately)
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