A sample

A sample of 10 randomly selected students revealed the following grades in
Business Statistics first test (in a marking scale of 0 to 100): 79, 63, 60, 45, 55, 58, 59, 62, 40, 68. Examine the data using groups and presenting:
a) the Histogram of the absolute frequencies and the polygon;
b) the Histogram of the relative frequencies;
c) the Histogram of the cumulative frequencies and the ogive;
d) the Mean;
e) the Median;
f) the Mode;
g) the Variance;
h) the Standard deviation;
i) the Coefficient of variance;
j) the Coefficient of Pearson and discuss the skewness briefly.
Make a table consisted of columns with the necessary calculations concerning the above
information.

Correct answer:

m =  58.9

Step-by-step explanation:

s=79+63+60+45+55+58+59+62+40+68=589 n=10  m=s/n=589/10=58.9



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