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Secondary 1 | Maths
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please help this asap thanks!
Date Posted: 3 years ago
Views: 688
Q5.
a) (i) Modal height = Most frequently occurring value = 1.65 m
a)(ii) Median height = Middle value (or in this case, average of 2 middle values)
= (1.65 + 1.67) ÷ 2
= 1.66 m
a)(iii) Mean height = Mean of all 8 values shown
= 13 28 ÷ 8
= 1.66 m
a)(iv) Use standard deviation formula ,
σ = 22.4 (3 s.f.)
b) The sample is not representative of all the boys in the school (since it is a small sample from only one class), so the mean height is not a good representation.
a) (i) Modal height = Most frequently occurring value = 1.65 m
a)(ii) Median height = Middle value (or in this case, average of 2 middle values)
= (1.65 + 1.67) ÷ 2
= 1.66 m
a)(iii) Mean height = Mean of all 8 values shown
= 13 28 ÷ 8
= 1.66 m
a)(iv) Use standard deviation formula ,
σ = 22.4 (3 s.f.)
b) The sample is not representative of all the boys in the school (since it is a small sample from only one class), so the mean height is not a good representation.
thanks u
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is already been help thanks
Date Posted:
3 years ago
thanks
done
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is already been help thanks
Date Posted:
3 years ago
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