M.B.A. I (Semester (CBCS) Examination, 2018
statistics for management (Paper
Day and Date Thursday, 13-12-2018 Max. Marks 70
Time 2.30 p.m. to 5.00 p.m.
N.B. All questions are compulsory.
All questions carry equal marks.
Use graph paper wherever necessary.
1. Choose the right option for following 14
In case of Carl Pearson coefficient of correlation the r value should be
between
to to
0 to 1 to
If both the variable moving towards same direction then it called as
correlation.
Positive Negative
Neutral No correlation
A is a graph containing set of rectangles for representing
the class intervals by its class intervals and frequency.
Ogive Histogram
Polygon Pie-chart
Variance
SD2 Median2
Mean2 Mode2
Semi-inter-quartile range is also known as
Quartile deviation Standard deviation
Mean deviation Variance
is the average of the modulus of the deviations of the
observations in a series taken from mean or median or mode.
Histogram Standard deviation
Mean deviation Polygon
P.T.O.
SLR-CL 5 *SLRCL5*
Set P
When a series is not symmetrical is said to be
Skewed Kurtosis
Ogive Index numbers
is a ratio or an average of ratios expressed as a percentage.
Correlation Regression
Probability Index numbers
refers to the degree of peakedness of the hemp of the
distribution.
Mean Median
Mode Kurtosis
10) Prediction or estimation of the value of a variable from a known value of
other variable to which it is related to called as
Correlation Regression
Range Skewness
11) An is a characteristic of an individual which cannot be
measured numerically.
Attribute QD
SD MD
12) is a graph which represents the data of cumulative
frequency distribution.
Bar chart Histogram
Ogive Scattered diagram
13) The arithmetic mean of the series 25, 30, 21, 55, 47, 10, 15, 17, 45, 35 is

25 30
35 40
14) The median of 19, 42, 11, 50, 30, 21, 52, 36, 27 is
27 30
36 42
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Set P
2. Solve the following questions 14
The score on a reading comprehensions text of 1000 students are given
below. Find the median score.
Scores Frequency Scores Frequency
0 5 6 25 30 250
5 10 12 30 35 185
10 15 50 35 40 110
15 20 120 40 45 32
20 25 225 45 50 10
Find the missing frequency for the following distribution whose mean is 50.
X 10 30 50 70 90
f 17 p 32 24 19
3. Solve the following questions 14
Calculate Quartile deviation of following data
Wages 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80
No. of
Workers
20 45 85 160 70 55 35 30
For two attributes A and we have 16, 36, 10 and
N 70. Calculate Yule's co-efficient of association.
4. An analysis of daily wages of workers of two organizations A and B yielded the
following results. 14
Organization
A B
Number of workers 10 20
Average daily wages Rs. 30 Rs. 15
Standard deviation 5 10
Calculate the average daily wages and standard deviation of wages of all the
workers in the two organization combine. Which organization is more equitable
in regard to wages
OR
SLR-CL 5 *SLRCL5*
Set P
4. The students in a competition are ranked by three judges in the following
orders, use the rank correlation coefficient to determine which pair of judges
has the nearest approach. 14
1st Judge 1 6 5 10 3 2 4 9 7 8
2nd Judge 3 5 8 4 7 10 2 1 6 9
3rd Judge 6 4 9 8 1 2 3 10 5 7
5. From the given data draw the histogram and calculate the mode by calculation
method and graphical method also. 14
X 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80
f 2 18 30 45 35 20 6 3