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Title Name Amity Solved Assignment BBA 5th Sem for BUSINESS STATISTICS assignment
University AMITY
Service Type Assignment
Course B.B.A
Semester Semester-V Course: B.B.A
Session
Short Name or Subject Code BUSINESS STATISTICS
Commerce line item Type Semester-V Course: B.B.A
Product Assignment of B.B.A Semester-V (AMITY)
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Questions:-


                                                                                                                                                               ASSIGNMENT A

Define time series. Describe moving average method
2. What do you mean by Primary & Secondary data? What are the methods to collect them?
3. What is a Hypothesis? Write the procedure for testing a Hypothesis
4. What is the difference between census & sample survey. Write steps in sampling design
5. . A biased coin is tossed 6 times. The probability of heads on any toss is 0.3. Let X denotes the number of heads that come up. Calculate: (I) P(X = 3) (ii) P(1 < X ≤ 5
6. The number of calls coming per minute into a hotels reservation center is Poisson random variable with mean 3. Find the probability that no calls come in a given 1-minute period
                                                                                                                                                                                                                             ASSIGNMENT B
CASE STUDY
Case Detail:-The length of life of an instrument produced by a machine has a normal distribution with a mean of 12 months and standard deviation of 2 months. Find the probability that an instrument produced by this machine will last

Q.1. Between 7 and 12 months.

Q.2. . Less than 7 months

Q.3. More than 5 months but less than 10 months

                                                                ASSIGNMENT C

1. The mean age of combined group of men and women is 25 years. If the mean age of group of men is 26 and that of group of women is 21, then percentage of men and women in the group respectively is:

 
 

Options

 
   

 60,40

 

 80,20

 

 30,70

 

 50,50

 

2. What is the weighted mean of first 10 natural numbers whose weights are equal to the corresponding number?

 
 

Options

 
   

 7

 

 5.5

 

 5

 

 4.5

 

3.Sum of mode and median of the data        

 
 

Options

 
   

 26

 

 11

 

 28

 

 41

 

4. The mean of 9 observations is 16. One more observation is included, and the new mean becomes 17. The 10th observation is

 
 

Options

 
   

 18

 

 30

 

 7

 

 26

 

5 Given third quartile is 80 & first quartile is 20 then semi-inter quartile range is

 
 

Options

 
   

 100

 

 60

 

 30

 

 40

 

6.Given third quartile is 100 & first quartile is 25 then coefficient of Quartile Deviation 

 
 

Options

 
   

 6

 

 75

 

 0.6

 

 125

 

7.Given mean is 45  & standard deviation is 15 then coefficient of variation is

 
 

Options

 
   

 30

 

 33.33

 

 34

 

0 .33

 

8. Given, covariance of (x ,y ) =10   variance of x =49,variance of y =100,correlation between x and y  is

 
 

Options

 
   

 5/8

 

 7/8

 

 1/3

 

 1/7

 

9.Coefficient of non-determination is

 
 

Options

 
   

 1-r2

 

 r-1

 

 r2

 

 1+ r2

 

10.In binomial probability distribution, the dependents of standard deviations must include

 
 

Options

 
   

  probability of q

 

 probability of p

 

  Trials

 

 all options

 

11,The formula to calculate standardized normal random variable is

 
 

Options

 
   

  x + μ ⁄ σ

 

 x - μ ⁄ σ

 

  x - σ ⁄ μ

 

  x + σ ⁄ μ

 
 

12.In binomial distribution, the formula of calculating standard deviation is

 
 

Options

 
   

  square root of p

 

  square root of pp.

 

  square root of nap

 

  square root of np

 

13.The tail or head, the one or zero and the girl and boy are examples of

 
 

Options

 
   

 non-functional events

 

 complementary events

 

 non-complementary events

 

 functional events

 

14.The method of calculating skewness which is based on the positions of quartiles and median in a distribution is called

 
 

Options

 
   

 Gary´s coefficient of skewness

 

 Sharma´s coefficient of skewness

 

 Bowley´s coefficient of skewness

 

 Jack Karl´s coefficient of skewness

 

15.The median of a moderately skewed distribution is 8, third quartile is 12, first quartile is 8 and inter-quartile range is 4 then relative coefficient of skewness is 

 
 

Options

 
   

  ±8

 

 ±1

 

 ±9

 

 ±11

 

16.The kurtosis defines the weakness of the curve in the region which is

 
 

Options

 
   

 around the mode

 

 around the mean

 

 around the median

 

 around the variance

 

17.In measures of skewness, the absolute skewness is equal to

 
 

Options

 
   

  mean mode

 

 mean-mode

 

 mean median

 

  mean-median

 

18.If for a distribution the difference of first quartile and median is less than difference of median and third quartile then the distribution is classified as

 
 

Options

 
   

 negatively skewed

 

 not skewed at all

 

 absolute open ended

 

 positively skewed

 

19.The three times of difference between mean and median is divided by standard deviation to calculate coefficient of skewness by method of

 
 

Options

 
   

 Professor Keller

 

 Professor Kelly

 

 Karl Pearson

 

 Professor Bowley

 

20.If the standard deviation of the population is 35 and the sample size is 9 then the standard deviation of sampling distribution is

 
 

Options

 
   

 12.67

 

 11.67

 

 13.67

 

 14.67

 
 

21.In statistical analysis, the sample size is considered large if

 
 

Options

 
   

 n > or = 30

 

 n < or = 30

 

 n > or = 40

 

 n < or = 50

 

 22.If the mean of population is 25 then the mean of sampling distribution is

 
 

Options

 
   

 50

 

 25

 

 30

 

 20

 

23.The standard deviation of a sampling distribution is also classified as

 
 

Options

 
   

 standard error

 

 statistic error

 

 sampling error

 

 probability error

 

24.In sampling distribution, the formula of calculating standard deviation of sample proportion is as

 
 

Options

 
   

 square root of pan ⁄ p

 

 square root of pin ⁄ q

 

 square root of nq ⁄ p

 

 square root of pp. ⁄ n

 

25.The numerical methods and graphical methods are specialized procedures used in

 
 

Options

 
   

 social statistics

 

 education statistics

 

 descriptive statistics

 

 business statistics

 

26.The focus groups, individual respondents and panels of respondents are classified as

 
 

Options

 
   

 pointed data sources

 

  itemized data sources

 

 secondary data sources

 

  primary data sources

 

27.The collection of all the elements such as group of variables for research is classified as

 
 

Options

 
   

 statistical process

 

 population

 

 data

 

 marginal error

 

28.In linear programming, the constraints can be represented by

 
 

Options

 
   

 equalities

 

 inequalities

 

 ratios

 

 both 1 and 2

 

29.The feasible region´s optimal solution for a linear objective function always includes

 
 

Options

 
   

 downward point

 

 upward point

 

 corner point

 

 front point

 

30.The objective of linear programming for an objective function is to

 
 

Options

 
   

 subset or proper set modeling

 

 maximize or minimize

 

 row or column modeling

 

 adjacent modeling

 

31.In linear programming, the objective function and objective constraints are

 
 

Options

 
   

 quadratic

 

 solved

 

 linear

 

 adjacent

 

32.In maximization problem, the optimal solution occurring at the corner point yields the

 
 

Options

 
   

 mean values of z

 

 mid values of z

 

 lowest value of z

 

 highest value of z

 

33.If the arithmetic mean is multiplied to coefficient of variation then the resulting value is classified as

 
 

Options

 
   

 coefficient of deviation

 

 coefficient of mean

 

 standard deviation

 

 variance

 

34.The formula of coefficient of range is

 
 

Options

 
   

 L+L ⁄ H+H

 

 Hal  ⁄ H-L

 

 H-L ⁄ H+L

 

 H+H ⁄ L+L

 

35.Considering the standard deviation, the mean absolute deviation is equal to

 
 

Options

 
   

 5⁄4 σ

 

 7⁄8 σ

 

 5⁄8 σ

 

 4⁄5 σ

 

36.The sum of highest and lowest value is 80 and the coefficient of range is 0.625 then the difference between highest and lowest value is

 
 

Options

 
   

 50

 

 70

 

 80

 

 48

 

37. The value of third quartile is 61 and inter quartile range of the set of observation is 48 then value of first quartile is

 
 

Options

 
   

 24

 

 34

 

 64

 

 13

 

38.Which is the best method to find trend

 
 

Options

 
   

 free hand

 

 least square

 

 moving average

 

 semi average

 

39.Components of time series are

 
 

Options

 
   

 T,S,C.I

 

 T,S.P.I

 

 T,C,S,P

 

 T,I,C.P

 

40.Regression lines intersect at

 
 

Options

 
   

 mean values

 

 median

 

 mode

 

 correlation

 


                               


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January 29, 2015
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