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 semiinter 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 nondetermination is



Options




1r^{2}


r^{2 }1


r^{2}


1+ r^{2}
^{ }
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




nonfunctional events


complementary events


noncomplementary 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 interquartile 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


meanmode


mean median


meanmedian



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 ⁄ HL


HL ⁄ 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


