Each month the number of days of rain in Cardiff is recorded.
The following data was collected over a period of 10 months.
11 13 8 11 8 7 8 14 x 15
For these data the median number of days of rain per month is 10.
(a) Find the value of x.
(b) Find
(i)
the standard deviation;
(ii)
the interquartile range.
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ah5576707
M = N+1=2
M = 10+1/2
M = 11/2 = 5.5
M = 5TH + 6TH /2
M = 11 + X /2
10 ×2 = 11+X
20-11 = X
9 = X
Step-by-step explanation:
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