Assignment for BBA 2nd Semester
1. The following distribution represents the number of minutes spent by a group of teenagers
in going to movies:
Minutes/Week
Number of
Minutes/Week
Number of
teenagers
teenagers
0-100
27
400-500
58
100-200
32
500-600
38
200-300
65
600-700
9
300-400
78
Calculate: i) arithmetic mean, geometric mean, harmonic mean, median & mode.
ii) Draw a histogram and locate mode also draw an ogive and locate median, Q1 & Q3.
2. From the following table:
Income (in Tk.)
No. of employees
Income (in Tk.)
No. of employees
300-400
30
700-800
60
400-500
46
800-900
50
500-600
58
900-1000
20
600-700
76
Calculate: mean deviation, coefficient of mean deviation, standard deviation, quartile
deviation, coefficient of variation & coefficient of quartile deviation.
3. The daily expenditure of 100 families are given below:
Price (Tk.)
80-90
90-100
100-110
No. of
11
18
39
110-120
17
120-130
15
families
Calculate: i) the first four moments about the value 105. Convert the result into moments
about the mean.
ii) Compute the value of β1 & β2 and comment on the result.
iii) Bowlay’s and Karl Pearson’s coefficient of skewness.
4. The following data relate to the prices and sales of a commodity:
Price (Tk.)
103
98
85
92
90
84
88
90
Sales (Units) 500
610 700
630
670
800
800
750
Calculate: i) the coefficient of correlation between price and supply.
ii) regression coefficients of supply on price and that of price on supply.
iii) regression equations of supply on price and that of price on supply.
93
700
95
680