in RED
Solution to Individual
Assignment #1
Winter 2008
Question 1
A)
The weights (in pounds) of a sample of 36 individuals were recorded and the
following statistics were calculated.
Mean = 160, Mode = 175, Median = 170 Range = 60 and Variance =324.
a) Comment on the shape of the distribution.
Comparing measures of central locations;
Since Mode > Median>Mean
=> the dist is skewed to the left
B)
Based on the following sample data on X; weight gain in pounds:
X
5
3
7
9
2
4
6
8
Mean =5.5 and Std = 2.449
b) Comparing dist A with dist. B which distribution has less
variation(more consistency)?
c)
Using Coefficient of relative variation
d)
CRVa= 18/160*(100)=11.25%
CRVb=2.449/5.5*(100)=44.53%.
Dist A has less variation.
Question2
The following data are the 3years annualized %
investment returns by the
25 sample funds:
16.5
14.3
14.3
13.9
13.8
11.2
11.1
10.8
11.1
13.1
12.8
12.1
12.0
11.8
10.8
10.7
10.8
11.6
11.4
11.3
11.3
11.2
10.8
10.6
10.6.
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 Spring '08
 GHATRI
 Standard Deviation, New Homes, Inter Quartile Range, sample standard deviation., StemandLeaf Display Stem, returns Q1=10.80 Q3=

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