Statistics Quiz 12

1 / 50

**We use normal distribution when ?n? is________________?**

2 / 50

**In a standard normal distribution z = 0 corresponds to _____________?**

3 / 50

**The most repeated (popular) value in a data set is called___________?**

4 / 50

**If r, between u = x and y = -x is _______________?**

5 / 50

**If bxy = byx = r then ________________?**

6 / 50

**In a Poisson probability distribution __________________?**

7 / 50

**Coefficient of variation (C.V) is given below:_________________?**

8 / 50

**f1x12 + f2x22 + ?????+ fxx42=___________?**

9 / 50

**Wilcoxon Rank-Sum test can be of_______________?**

10 / 50

**Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation ?**

11 / 50

**Since E(X) _______X is said to be unbiased estimator of the population mean?**

12 / 50

**In normal distribution u2 = S2 and u4 =___________?**

13 / 50

**Type II error is committed when the null hypothesis is _________________?**

14 / 50

**The probability of getting exactly two heads when two balanced coins are toss once_________________?**

15 / 50

**For a normal distribution having ? = 241 and ? = 2 P (X?235) is:_______?**

16 / 50

**Dependence of difference on statistics is for_______________?**

17 / 50

**In testing for the difference between two populations, it is possible to use____________?**

18 / 50

**The mean of 5,5,5,5,5 is ______?**

19 / 50

**In binomial experiment, the successive trials are _____________?**

20 / 50

**The smallest and the largest value of any given class of a frequency distribution are called ___________?**

21 / 50

**A characteristics that does not change is called______________?**

22 / 50

**The sum of p and q is always:___________________?**

23 / 50

**condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is ?**

24 / 50

**Qon means _________ for the given year?**

25 / 50

**The class ___ are obtained when we divide the sums of the lower and upper class limits by 2?**

26 / 50

**Binomial distribution is positively skewed when ______________?**

27 / 50

**A parameter is a measure which is computed from___________?**

28 / 50

**Which of the following test must be two-sided ?**

29 / 50

**The mean of a distribution is 14 and the standard deviation is 5. What is the value of the coefficient of variation ?**

30 / 50

**Two attributes are associated if expected frequency is ____________________?**

31 / 50

**Which of the following is simple hypothesis___________________?**

32 / 50

**G.M. are set of ?n? values product of the nth roots of the ______________?**

33 / 50

**In a binomial distribution, n = 20 and p = 3/5, then variance of this distribution ______________?**

34 / 50

**The lack of uniformity is called ______________?**

35 / 50

**The degree of peakedness is called__________________?**

36 / 50

**__________ deviation taken from A.M. is always equal to zero?**

37 / 50

**Given X1=12,X2=19,X3=10,X4=7, then summation of X equals?**

38 / 50

**An estimator Q is an unbiased estimator of the population parameter Q if ___________________?**

39 / 50

**If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is_____________?**

40 / 50

**The second moment about mean is _____?**

41 / 50

**If any value in the data is zero, then which of the following average vanishes_________?**

42 / 50

**Which of the following test is most likely assessing this null hypothesis: Ho The number of violations per apartment in the population of all city apartments is binomially distributed with a probability of success in any one trial of P=0.3 dd ?**

43 / 50

**The sum of deviations of observations is zero, when deviations are taken from __________?**

44 / 50

**An index number is used______________?**

45 / 50

**Which of the following is not a correct statement about a Probability _________________?**

46 / 50

**if we connect the mid point of rectangles in a histogram with a series of lines, we get __________**

47 / 50

**Mean deviation is always ________________?**

48 / 50

**Power of test is denoted by _______________?**

49 / 50

**Coded method of calculation is only used in ___________?**

50 / 50

**Normal distribution is a probability distribution of _____ random variable?**

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