Statistics Quiz 9
1 / 50
If E(x) is the expected value of X then E[x ? E(x)]= ___________________?
2 / 50
The mathematical exception of x + y is equal to ________________?
3 / 50
If x = 3 then value of regression co-efficient of X or Y is ________________?
4 / 50
Eyes color of employees is the example of____________?
5 / 50
A coin is so weighted that P (T) = 2P(H) then P(H) is _______________?
6 / 50
The Harmonic Mean of any two numbers is________________?
7 / 50
Volume Index in Marshall is ____________?
8 / 50
The frequency distribution mean > Median > Mode is called __________?
9 / 50
If y = bx + a the mean deviation of y is_____________?
10 / 50
A source note foot are the _______________?
11 / 50
if Var(T2)_______________?
12 / 50
The first moment about means is always_________________?
13 / 50
The variance of randomvariable of x then var(x) = E[x-E[x]2 = E[________]?
14 / 50
Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
15 / 50
In a binomial distribution mean and variance is _________________?
16 / 50
The Normal Curve is asymptotic to the?
17 / 50
A simple aggregate price index_____________?
18 / 50
The binomial distribution is symmetrical when:______________?
19 / 50
In a certain normal distribution having ? = 35 and variance = 16, then mode will be_______________?
20 / 50
A list of sample _________ is called sample space?
21 / 50
Which of the following describe the middle part of a group of numbers ?
22 / 50
A sample of 24 observations is taken from a population that has 150 elements. The sampling distribution of is___________?
23 / 50
Let X1,X2,?Xn be a random sample from the density f(x;(?), where ? may be vector. If the conditional distribution of X1,X2,?Xn given S=s does not depend on ? for any value of s of S, then statistic is called?
24 / 50
The experiment is repeated a _____________ number of times?
25 / 50
If bxy = -.8 by x = 1.2 then value of r is ________________?
26 / 50
Data arranging into rows and columns are called______________?
27 / 50
In binomial distribution the probability of success remains __________ from trial to trial?
28 / 50
Normal Distribution ?
29 / 50
Price in proceeding year used in the method is called __________?
30 / 50
A set of jointly sufficient statistic is defined to be minimal sufficient if and only if_______________?
31 / 50
In hypergeometric distribution, the trial are:_______________?
32 / 50
Relative measure of skewness was introduced by _____________?
33 / 50
The Runs test results in rejecting the null hypothesis of randomness when______________?
34 / 50
There are ____________ parameter in Binomial distribution?
35 / 50
Class _________ is the difference between two class limit?
36 / 50
Binomial distribution is symmetrical when P=_________________?
37 / 50
You asked five of your classmates about their height. On the basis of this information, you states the average height of all student in your university or college is 67 inches. This is an example of____________?
38 / 50
Data which have not been arranged in systematic order is called___________?
39 / 50
The number of accidents in a city during 2012 is____________?
40 / 50
If any value in the data is zero, then it is not possible to have _______?
41 / 50
The graph obtained by joining the mid points of the tops of adjacent rectangles in histogram is called ______________?
42 / 50
Census reports used as a source of data is____________?
43 / 50
Data being used by an agency which is originally collected by them are _______ data?
44 / 50
The median of normal distribution corresponds to the value of Z equal to_________________?
45 / 50
when a three die rolled the sample space consists of _____________?
46 / 50
If the conditional distribution of X1,X2,?..Xn given S=s, does not depends on ?, for any value of S=s the statistics S=s(X1,X2,?..Xn) is called______________?
47 / 50
In a binomial distribution mean and variance is ________________?
48 / 50
Correlation coefficient lies between__________________?
49 / 50
Life of a T.V picture tube is a____________?
50 / 50
Median is always central value even if the data is _______?
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