PARUL – MBA – BUSINESS STATISTICS
Q.1(a). Describe the importance and scope of Statistics in BUSINESS STATISTICS
(b). Explain the characteristics of a frequency distribution.
©. Explain how BUSINESS STATISTICS plays an important role in management planning and decision making?
(d). With the help of few examples explain the role of BUSINESS STATISTICS as a managerial tool.
Q.2 The take-home salary (in Rs.) of 40 unskilled workers from a company for a particular month was.
Construct a frequency distribution having a suitable number of classes for BUSINESS STATISTICS.
Q3. The following data give the points scored in a tennis match by two players X and Y at the end of twenty games:
(10, 12) (7, 11) (7, 9) (15, 19) (17, 21) (12, 8) (16, 10) (14, 14) (22, 18) (16, 7) (15, 16) (22, 20) (19,
15) (7, 18) (11, 11) (12, 18) (10, 10) (5, 13) (11, 7) (10, 10)
Taking class intervals as: 5–9, 10–14, 15–19 . . ., for both X and Y, construct
(i) Bivariate frequency table.
(ii) Conditional frequency distribution for Y given X > 15.
Q4. The following distribution gives the pattern of overtime work per week done by 100 employees of a company.
Calculate Q1, D7 and P60.
Q5. Find the missing frequency for the following incomplete distribution by using appropriate formula when mode is 36.
Q6. Mean and S.D. of 100 items are found by a student as 50 and 0.1. If at the time of calculation, two items are wrongly taken as 40 and 50 instead of 60 and 30. find correct mean and S.D.
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