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WorksheetsBBA sem 2 Business Statistics
Total questions: 20
Worksheet time: 14mins
2, 4, 5, 5, 6, 8
What is the variance of this set of data?
2, 4, 6
4
1.67
2.33
2.67
What is the formula of Standard Deviation?
√∑fd^2/N
∑fd^2/N
l +h (f1-fo)/(2f1-fo-f2)
(L+S)/(L-S)
What is the formula of Rank correlation Coefficient?
p= 1-(6∑d^2)/N(N^2-1)
√∑fd^2/N
∑fd^2/N
N∑xy−(∑x)(∑y)
{√ [N∑x^2−(∑x)^2][N∑y^2−(∑y)^2]}
What is the formula of Karl’s Correlation Coefficient?
p= 1-(6∑d2)/N(N^2+1)
N∑xy+(∑x)(∑y)
{√ [N∑x^2+(∑x)^2][N∑y^2+(∑y)^2]}
p= 1-(6∑d^2)/N(N^2-1)
N∑xy−(∑x)(∑y)
{√ [N∑x^2−(∑x)^2][N∑y^2−(∑y)^2]}
What is the formula of Regression?
Y = aXbX
Y = a/bX
Y = a+bX
Y = aX+bZ
Pr(Aor B) =
1-pr(A) + pr(B)
pr(A) - pr(B)
pr(A) X pr(B)
pr(A) + pr(B)
pr (A and B) =
pr(A) / pr(B)
pr(A) X-pr(B)
pr(A) X pr(B)
pr(A) + pr(B)
Who proposed an application of a scientific method to an operations management problem?
Henry L. Gantt,
Frederick W. Taylor
Vishal Singh
Adam Smith
Which of the following is not a Measure of Central Tendency?
Mean
Median
Mode
Standard Deviation
Which of the following is not a Measure of Dispersion?
Standard Deviation and ,
Variance
Mode
Range
Find the median for the following list of values:
13, 18, 13, 14, 13, 16, 14, 21, 13
13
14
15
16
Find the mode for the following list of values:
13, 18, 13, 14, 13, 16, 14, 14, 13
13
14
16
18
Mode= l +h (f1-fo)/(2f1-fo-f2)
In this formula f1 stands for __
Frequency of Modal Class
Cumulative Frequency of Modal Class
Frequency of preceding Class
Frequency of succeeding Class
Find the range for the following list of values:
13, 18, 13, 14, 13, 16, 14, 21, 13
7
8
9
10
If an increase (or decrease) in the values of one variable results, on an average, in a corresponding increase (or decrease) in the values of the other variable the correlation is said to be
negative
positive
Linear
Non Linear
A coefficient of +1 indicates a
relatively positive correlation
perfect negative correlation
perfect positive correlation
relatively negative correlation
A technique of studying the dependence of one variable (called dependant variable), on one or more variables (called explanatory variable), with a view to estimate or predict the average value of the dependent variables in terms of the known or fixed values of the independent variables is called as
Regression
Correlation
Attribution
Probability
Intersection of cumulative frequency denotes
Mean
Median
Mode
Range
