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Statistics Quiz 8

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Statistics Quiz 8

1 / 50

If right tail is longer than left tail then distribution is called _________________?

2 / 50

If n = 400 and P=.69 then 90% C.I for P is _________________?

3 / 50

We must arrange the data before calculating _________?

4 / 50

When X denotes the number of success in binomial experiment, it is called ________________?

5 / 50

A measure of dispersion is always ________________?

6 / 50

Correlation coefficient is ___________ with respect to x and y?

7 / 50

Normal distribution has ______ parameter?

8 / 50

A time series is an arrangement of data according to __________________?

9 / 50

Village Patwari collecting the data about cotton crops is the example of_____________?

10 / 50

Binomial distribution is symmetrical when P=___________________?

11 / 50

___________ data are collected for the first time.

12 / 50

Single number which shows ___________ changes in a phenomenon is called an Index Number?

13 / 50

In binomial experiment, the probability of success is denoted by __________________?

14 / 50

You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 67 inches. This is an example of ?

15 / 50

This index measure the change from month to month in the cost of a representative ?basket? of goods and services of the type bought by a typical household?

16 / 50

A random variable is that whose value is determined by the outcome of _________________?

17 / 50

________ paper is needed to show the graphs of frequency distribution?

18 / 50

E(ax + b) = A E(x) +___________________?

19 / 50

If c is non-random variable, the E(C) is_______________?

20 / 50

To perform a Runs test for randomness the data must be_______________?

21 / 50

A table has at least __________ part?

22 / 50

If _________ then the distribution is positively skewed?

23 / 50

Correlation is _____________ of regression coefficients?

24 / 50

If a card is chosen from a standard deck of cards, what is the probability of getting a five or a seven ?

25 / 50

Data regarding opinions of consumers about some product obtained through lady workers are ____________?

26 / 50

Frequency table is an arrangement of data by classes together with their _______ class frequencies?

27 / 50

A random variable may be _____________?

28 / 50

suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?

29 / 50

A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be_____________?

30 / 50

Analysis of Variance (ANOVA) is a test for equally of______________?

31 / 50

For a binomial distribution?

32 / 50

Three brands of coffee are rated for tasted on a scale of 1 to 10. Six persons are asked to rate each brand so that there is a total of 18 observations.The appropriate test to tasted equally good is_____________?

33 / 50

The Harmonic Mean of two number is ?a? and ?b? is given by ____________?

34 / 50

In natural Sciences, statistics____________.

35 / 50

The normal distribution is_________?

36 / 50

Consumer price Index Number also called _________ is designed to measure changes?

37 / 50

There are ________ important bases of classification?

38 / 50

The graphs of the symmetrical distribution is _____________?

39 / 50

The difference between the upper and lower class boundaries of a class are know as _________________?

40 / 50

_______are used to represent data classified on qualitative?

41 / 50

Geometric means of X1 and X2 is________________?

42 / 50

The sum of the squares of deviations is the least when measured from____________?

43 / 50

If Y=?8X ? 5 and SD of X is 3, then SD of Y is _______________?

44 / 50

The average of first n natural numbers is_______________?

45 / 50

In w.o.r 2?x=_____________________?

46 / 50

If an event consists of only one sample point is called _____________?

47 / 50

Non-random sampling is also called___________________?

48 / 50

Data published by Bureau of statistics in its publications are _______________?

49 / 50

Random numbers are also called__________________?

50 / 50

Variance is always calculated from___________?

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