Helen is studying the daily mean wind speed for Camborne using the large data set from The data for one month are summarised in Table 1 below.
2.
13
14
12
11
9
n/a
6.
7
8
2
1
Windspeed
Frequency
1
3
2
13
2
3
2
Table 1
(a) Calculate the mean for these data.
(b) Calculate the standard deviation for these data and state the units.