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DRIVE
SUMMER
2016
PROGRAM
MBA
SEMESTER
I
SUBJECT
CODE & NAME
MBA103-
Statistics for Management
Note –
Answer all questions. Kindly note that answers for 10 marks questions should be
approximately of 400 words. Each question is followed by evaluation scheme.
Q1. Give the meaning of
the word Statistics. Mention the characteristics of Statistics.
Meaning of Statistics
Characteristics of
Statistics
Answer:
Statistics plays an important role in almost every
facet of human life. In business context, managers are required to justify
decisions on the basis of data. They need statistical models to support these
decisions. Statistical skills enable managers to collect, analyse and interpret
data in order
QUESTION2.
a. What do you mean by Probability?
Answer2a.
Probability
is a branch of mathematics that deals with calculating the likelihood of a
given event's occurrence, which is expressed as a number between 1 and 0. An
event with a probability of 1 can be considered a certainty: for example, the
probability of a coin toss resulting in either "heads" or
"tails" is 1, because there are no other options, assuming the coin
lands flat. An event with a probability of .5
b.A bag
contains 5 white, 6 red, 2 green and 2 black balls. One ball is selected at
random from the bag. Find the probability that the selected ball is-
i. white
ii.
non-white
iii.
white or green
iv.
black or red
Answer2b.
(i)Total No. of Balls =
(5+6+2+2) = 15
Probability
of white ball = P(E) = n(E)/n(S) = 5/15 = 1/3
(ii)Total No. of Balls =
(5+6+2+2) = 15
QUESTION3.
What Do you mean by Sampling? Describe various Probability and Non- Probability
Sampling Methods.
Answer3.
Sampling
- In
statistics, quality assurance, and survey methodology, sampling is concerned
with the selection of a subset of individuals from within a statistical
population to estimate characteristics of the whole population. Each
observation measures one or more properties (such as weight, location, color)
of observable bodies distinguished as independent objects or individuals. In
survey sampling, weights can be applied to the data to adjust for the sample
design, particularly stratified sampling. Results from
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