Statistics Quiz 6

1 / 50

**Variance remains unchanged by change of_____________?**

2 / 50

**The Coefficient of Skewness is always zero for ____________ distribution?**

3 / 50

**If a Binomial experiment is repeated ?N? times then binomial frequency distribution is. _______________?**

4 / 50

**Standard deviation of the sampling distribution of a statistics is called_____________?**

5 / 50

**If a and b are two constants, then Var(a+bX) is_______________?**

6 / 50

**if f(x1,x2,?xn;?)=g(??;?)h(x1,x2,?.,xn), then ?? is____________?**

7 / 50

**The S.D. and variance are ____ of origine?**

8 / 50

**The lower class boundary of 25-35 will be ______________?**

9 / 50

**The weighty system changed with _______________?**

10 / 50

**Sampling errors are reduced by:___________________?**

11 / 50

**If the standard deviation of the values 2, 4, 6, 8 is 2.58, then the standard deviation of the values 4, 6, 8, 10 is_______________?**

12 / 50

**The mean of hypergeometric distribution is:___________________?**

13 / 50

**Second moment about mean is_______________?**

14 / 50

**data classified by methods are called __________ data?**

15 / 50

**The mean, median and mode for binomial distribution will be equal when:______________?**

16 / 50

**Variance of binomial distribution is always:______________?**

17 / 50

**Average calculated used in index number by __________ method?**

18 / 50

**what is the probability of a type II error when ?=0.05 ?**

19 / 50

**The standardized normal variate z means_________ away from the mean?**

20 / 50

**Criteria to check a point estimator to be good are_____________?**

21 / 50

**If we increase the sample size, it means that it:_________________?**

22 / 50

**The Index number are used to measure seasonal and cyclical variations in ____________?**

23 / 50

**According to the empirical rule, approximately what percent of the data should lie within ????**

24 / 50

**If X N(55,49) then ? ?**

25 / 50

**The probability of a save event is equal to _________________?**

26 / 50

**In r x c table for test of Independence the degree of freedom is _____________?**

27 / 50

**Richness is not a ________________?**

28 / 50

**Mean deviation of Normal Distribution is_____________?**

29 / 50

**The relation showing between whole and its components used chart is said to be ___________________?**

30 / 50

**Binomial distribution has parameters:______________?**

31 / 50

**Statistics laws are true for______________?**

32 / 50

**The probability of drawing an even number in a toss of a balanced die ______________?**

33 / 50

**95% confidence limits for P are _________________?**

34 / 50

**H.M. _____ G.M. _______ A.M?**

35 / 50

**Which of the following is not an example of a discrete probability distribution ?**

36 / 50

**If X and Y are independent then SD (X ? Y) is________________?**

37 / 50

**The minimum variance unbiased estimator of the population mean is _______________?**

38 / 50

**Probability distribution of a statistics is called_________________?**

39 / 50

**The mode of the data 2,4,6,6,6,8 is _______________?**

40 / 50

**If X ? N (?, ?2) then Z ?__________?**

41 / 50

**The formula ?poqn/?poqo x100 is used to calculate_______________?**

42 / 50

**The difference between statistics and parameter is called:______________?**

43 / 50

**Attributes are _______ if they have some relation?**

44 / 50

**Which branch of statistics deals with the techniques that are used to organize, summarize, and present the data?**

45 / 50

**________ is the simplest means of dispersion?**

46 / 50

**P95 means _____?**

47 / 50

**A random variable X has binomial distribution with n = 10 and p = 0.3 then variance of X is:_____________________?**

48 / 50

**If ?X? is normally distribution with >?= 8 and S.? D. 4, then P(6?X?10) may be______________?**

49 / 50

**The Mann-Whitney U test is preferred to a t-test when____________?**

50 / 50

**Total Area under the curve in probability of density function is ?**

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