101. In correlation, both variables are______________?
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A. Fixed

B. Experimental

C. Random

D. Non-random

102. If mean is 25 and standard deviation is 5 then C.V (Coefficient of variation) is_______________?
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A. 25%

B. None of these

C. 100%

D. 20%
103. If P(A?B) =1/4 then P(AUB) is ________________?
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A. 2-Jan

B. 12-Jan

C. 8-Mar

D. 1/3
104. The square bracket is an finite G. Series is obtained by formula _________________?
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A. 1/1-rn

B. a/(1-r)n

C. a/1-rn

D. a/1-r

105. Which of the following is not a measure of central tendency ?
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A. Percentile

B. Mode

C. Standard deviation

D. Quartile

106. Lack of symmetry is called_______________?
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A. Non of these

B. Skewness

C. Absolute Dispersion

D. Relative Dispersion

107. Correlation coefficient is ___________ with respect to x and y?
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A. Skewed

B. Non-normal

C. #NAME?

D. Symmetrical
108. Hourly temperature recorded by weather bureau is the example of ___________?
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A. Continuous variable

B. Discrete variable

C. None of these

D. Qualitative variable

109. If r, between u = x and y = -x is _______________?
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A. 0

B. 1

C. Non of these

D. -1
110. The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be_____________?
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A. 3012.11 units

B. 4021.12 units

C. 5031.10 units

D. 2066.55 units
111. If X and Y are independent then SD (X ? Y) is________________?
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A. Var(X)+Var(Y)????????????????

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

C. SD(X)?SD(Y)

D. SD(X)+SD(Y)

E. SD(X)+SD(Y)???????????????

112. If a distribution is abnormally tall and peaked, then is can be said that the distribution is_____________?
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A. Leptokurtic

B. Mesokurtic

C. Pyrokurtic

D. Platykurtic

113. 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 ?
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A. None of these alternatives is correct

B. Approximately normal because the sample size is small relative to the population size

C. Exactly

D. Approximately normal because of the central limit theorem

114. Continuous variable can assume __________ value?
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A. Constant

B. Specific

C. All possible

D. Accuracy

115. In probability sampling each sampling unit has some____________________?
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A. Large

B. Unknown

C. Know

D. Small

116. Life of a T.V picture tube is a____________?
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A. Qualitative variable

B. Continuous variable

C. Discrete variable

D. Constant

117. The mean deviation of the values, 18, 12, 15 is____________?
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A. 6

B. Zero

C. 2

D. 3

118. Sum of deviations will be zero if it is taken from_________________?
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A. Mode

B. Mean

C. Standard Deviation

D. Median

119. Correlation is _____________ of regression coefficients?
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A. M.D.

B. A.M.

C. H.M.

D. G.M.
120. In which approach to probability the outcomes are equally likely to occur ?
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A. Classical Probability

B. Subjective Probability

C. Relative Frequency

D. Independent

121. The variance of a constant is_______________?
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A. a

B. None

C. Zero

D. Constant

122. Quartile Coefficient of skewness lies between______________?
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A. None of these

B. 0 and 1

C. -1 and 0

D. -1 and +1
123. A random variable may be _____________?
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A. continuous

B. discrete or continuous

C. fixed

D. discrete

124. if you roll a pair of dice, what is the probability that (at least) one of the dice is a 4 or the sum of the dice is 7 ?
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A. 15/36

B. Apr-36

C. 21/36

D. 13/36

125. In the sampling without replacement a sampling unit can be selected_______________?
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A. More than once

B. None of these

C. Only Once

D. Less than once

126. Probability distribution of a random variable is also know as Probability_________________?
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A. Distribution Function

B. Probability Function

C. Probability Distribution

D. Probability Density Function

127. __________ are said to be exhaustive if they constitute the entire sample space?
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A. Events

B. Outcomes

C. Objects

D. Equally
128. A list of sample _________ is called sample space?
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A. Distinct

B. Piont

C. Events

D. Subset

129. Which of the following is not based on all the observations ?
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A. Geometric Mean

B. Weighted Mean

C. Arithmetic Mean

D. Harmonic Mean

E. Mode
130. Which of the following can never be taken as coefficient of correlation is _____________?
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A. -99

B. ?3

C. 0.99

D. 0

131. The first hand and unorganized form of data is called_______________?
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A. Organized data

B. Primary data

C. Secondary data

D. None of these

132. A random variable is ____________ ?
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A. Not a function

B. A continuous variable

C. A function

D. None of these

133. Richness is not a ________________?
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A. Variable

B. Continuous

C. Constant

D. Discreade

134. The sum of squared deviations of a set of n values from their mean is__________________?
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A. Maximum

B. Zero

C. Least

D. None

135. The degree of peakedness is called__________________?
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A. Skewness

B. Dispersion

C. Kurtosis

D. Symmetry

136. _____________is used to compare the variation or dispersion in two or more sets of data even though they are measured in different units?
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A. Coefficient of Variation

B. Range

C. Standard Deviation

D. Mean Deviation

137. The word statistics is at present used in _______________?
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A. Six ways

B. Four ways

C. Two ways

D. Three way
138. A sample of 24 observations is taken from a population that has 150 elements. The sampling distribution of is___________?
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A. Approximately normal because of the central limit theorem

B. Approximately normal because the sample size is large in comparsion to the population size

C. Normal if the population is normally distributed

D. Approximately normal because is always approximately normally distributed

139. If P(A/B)=1/4 and P(A?B) =1/5 then P(B) is ________________?
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A. 20-Jan

B. 0

C. 4/5

D. 9-Jan

140. The first moment about means is always_________________?
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A. None of these

B. 1

C. Zero

D. Negative

141. The time taken by an athlete to run a 400 mile race in SAF games ________________?
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A. Non of these

B. Random

C. Discrete data

D. Continuous data
142. Probability distribution of a statistics is called_________________?
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A. Parameter

B. Sampling

C. Data

D. Sampling distribution
143. Which of the following is not a correct statement about a Probability _________________?
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A. A value near 0 means that the event is not likely to occur/happens

B. It is the collection of several experiment

C. It must have a value between 0 and 1

D. It can be reported as a decimal or a fraction

144. When the two regression lines coincide there r is __________________?
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A. Zero

B. Great

C. More than zero

D. Less than zero

145. If y = 2 + 6x then value of y intercept is _________________?
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A. None

B. 6

C. 0

D. 2
146. 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_______________?
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A. 2.33

B. 0

C. 2.58

D. 4.66

E. 5

147. Data being used by an agency which is originally collected by them are _______ data?
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A. Primary

B. Secondary

C. Discrete

D. Quantitative

148. Data in the Population Census Report is____________?
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A. Grouped data

B. Primary data

C. Secondary data

D. Ungrouped data

E. Arrayed data

149. _________ are the numbers obtained by some random process?
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A. Random table

B. Pack

C. Two- digit number take

D. Non of these

150. An events that contains the finite number point the sample space is called __________________?
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A. Random

B. Finite

C. values

D. Continuous