Question

In a sample of 30 men, the mean height was 177 cm. In a sample

of 16 women, the mean height was 164 cm. What was the mean
height for both groups put together?

Answer 1

172.5

Explanation:

mean of men=sum/no of men

177=sum/30

sum=177*30

= 5310

mean of women=sum/no of women

164=sum/16

sum=164*16

= 2624

mean height= (5310+2624)/30+16

=7934/46

=172.5

Answer 2

172.48cm is the mean height for both groups put togther

Explanation:

I've attached my work

- im red is the given information

- In pink is the formula used

- in green is the final answer

- In blue is what we need to find + the proccess

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