# 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 consisting of columns with the necessary calculations concerning the above

information.

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 consisting of columns with the necessary calculations concerning the above

information.

### Correct answer:

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