Question

Below are the number of wins for the National Basketball Association (NBA) teams in the 2003-2004 season:

45, 43, 42, 33, 33, 54, 47, 44, 42, 30,
59, 46, 36, 18, 13, 6, 49, 44, 27, 26,
62, 50, 37, 34, 34, 59, 58, 51, 45, 18

a)
mean =  

d)
range =  

e)
variance =  

f)
Standard deviation =  

Answer 1

Here we have data:

6,13,18,18,26,27,30,33,33,34,34,36,37,42,42,43,44,44,45,45,46,47,49,50,51,54,58,59,59,62

a) Mean = (Sum of total number ) / Total number of data

= (6+ 13 + 18 + ..............+ 62) / 30

= 39.5

b) Range = Higest value - Lowest value

= 62 - 6

= 56

e) Variance:

= 197.1552 ( Round to the four decimal place)

f) Stnadard deviation:

= 14.0412 (Round to the four decimal place)