Question

8. The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:
Fri
Sat
Day
Mon Tue Wed Thurs
Sun
Rainfall
0.0 12.2 2.1 0.0
0.62 20.5 5.5 1.0
(in mm)
) Find the range of the rainfall in the above data. 20-5-0.0= 20.5
(n) Find the mean rainfall for the week. 41.3=5 - 8.6
(iii) On how many days was the rainfall less than the mean rainfall.
9. The heights of 10 girls were measured in cm and the results are as follows:
135, 150, 139, 128, 151, 132, 146, 149, 143, 141.
(1) What is the height of the tallest girl? (ii) What is the height of the shortest girl?
(ii) What is the range of the data? (iv) What is the mean height of the girls?
(V) How many girls have heights more than the mean height.​

Answer 1

Answer:

8 iii)6 days

9)i)151

ii)128

iii)23

iv)141.4

v)4