Question

15. Calculate the mean for the following data:
Height (in cm): Number of boys:
140
2
142
6
143
10
145
15
148
4
150
3
(a) 1444.75 cm
(b) 1144.856 cm
(c) 144.475 cm
(d) 14.4475 cm​

Answer 1

Answer:

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Answer 2

Answer:

option b is the answer of this question but I'm not fully sure