basic statistics Mcqs
101. Geometric means of X1 and X2 is________________?
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A. X1????+X2????

B. X1+X2x

C. X1+X2????????

D. X1+X2

E. X1X2????????
102. Results obtained by counting are_____________?
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A. Continuous

B. Discrete

C. Both (a) and (b)

D. None of these

103. Which sampling technique is appropriate when there is homogeneity in population?
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A. Stratified sampling

B. Cluster sampling

C. Systematic sampling

D. Simple random sampling
104. Data regarding opinions of consumers about some product obtained through lady workers are ____________?
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A. Primary

B. Secondary

C. Cheapest method

D. Existing Sources
105. The average of first n natural numbers is_______________?
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A. All of the above

B. n2

C. n+12

D. None of these

106. Lack of symmetry is called_______________?
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A. Relative Dispersion

B. Absolute Dispersion

C. Skewness

D. Non of these

107. For Mesokurtic curve of the distribution, ?2 is__________________?
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A. 3

B. None of these

C. 3

D. Zero

108. When the word random variable use in statistics it must have?
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A. Probability distribution

B. None of these

C. Variable

D. Values

109. Which of the following describe the middle part of a group of numbers ?
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A. Measure of Central Tendency

B. Measure of Shape

C. Measure of Association

D. Measure of Variability

110. Usually measurements give rise to ________ data?
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A. Discrete

B. Continuous

C. Specific

D. Constant

111. 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. 0

B. 2.58

C. 4.66

D. 5

E. 2.33

112. The sum of squares of deviation is least if measure from__________?
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A. Mean

B. Mode

C. Variance

D. Median

113. Data in the Population Census Report is____________?
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A. Primary data

B. Arrayed data

C. Grouped data

D. Ungrouped data

E. Secondary data

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

B. Mean

C. Median

D. Standard Deviation

115. Single numerical fact is called________?
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A. Point

B. Datum

C. Data

D. Statistic

116. If the third moment about mean is zero then distribution is_______________?
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A. Mesokurtic

B. Positively Skewed

C. Symmetrical

D. Negatively Skewed

117. A constant variable can take values______________?
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A. Zero

B. Nothing

C. Not fixed

D. Fixed
118. The variance of a constant is_______________?
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A. a

B. Constant

C. None

D. Zero
119. _____________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. Range

B. Coefficient of Variation

C. Mean Deviation

D. Standard Deviation

120. making a entrance slip in service hospital is the method of collection of data by______________?
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A. Correspondents

B. Entry

C. Registration

D. none of these

121. Which sampling method we will apply if there is no sampling frame?
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A. Simple random sampling

B. Cluster sampling

C. Systematic sampling

D. Stratified sampling

122. Major area of statistics today is concerned with drawing of conclusions from__________?
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A. Two

B. Samples

C. Primary

D. Complete study

123. 2nd Quartile = 5th Decile = 50th Percentile = ?
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A. Median

B. Mean

C. Mode

D. Harmonic Mean

E. Geometric Mean

124. The standard deviation is always _________ than mean deviation?
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A. Less

B. None

C. Greater

D. Equal

125. The mean deviation of the values, 18, 12, 15 is____________?
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A. 3

B. Zero

C. 2

D. 6

126. If all values are same then the measure of dispersion will be________________?
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A. Mode

B. Median

C. 0

D. 1

E. Mean

127. Find the median of the following datA. 160, 180, 200, 280, 300, 320, 400?
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A. 140

B. 300

C. 280

D. 180

128. The Geometric Mean of -2, 4, 03, 6, 0 will be______________?
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A. 0

B. None of these

C. -3

D. 3

E. Cannot be Computed
129. Questionnaire survey method is used to collect____________?
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A. None of these

B. Primary data

C. Secondary data

D. Qualitative variable

130. _____________is the measure of average which can have more than one value?
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A. Median

B. Mean

C. Harmonic Mean

D. Mode

E. Geometric Mean

131. The data which have already been collected by some one are called____________?
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A. Raw data

B. Secondary data

C. Array data

D. Fictitious data

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

B. Least

C. Maximum

D. None

133. Which of the following is not a measure of central tendency ?
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A. Standard deviation

B. Mode

C. Quartile

D. Percentile

134. The first hand and unorganized form of data is called_______________?
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A. Primary data

B. None of these

C. Secondary data

D. Organized data

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

B. Dispersion

C. Skewness

D. Kurtosis
136. Identify the attribute?
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A. Temperature of room

B. Blood Pressure

C. Religions of people of a country

D. Blood group

137. In inferential statistics, we study____________?
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A. the methods to make decisions about population based on sample results

B. how a sample is obtained from a population

C. how to make decisions about mean, median, or mode

D. None of the above

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

B. 24

C. 8

D. 5

E. None

139. The Coefficient of Skewness is always zero for ____________ distribution?
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A. Symmetrical

B. All of above

C. Skewed

D. None of these

140. f1x12 + f2x22 + + fxx42=___________?
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A. ?mi=1 ixi2

B. ?u1=1 ixi2

C. ?pi=1 ixi2

D. ?ni-1 ixi2

141. When there is 0 in our dataset which mean we cannot calculate?
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A. GM

B. HM

C. AM

D. Both A and B
142. Var(2X+3) is________________?
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A. 4 Var(X)

B. 4 Var(X)+3

C. 5 Var(X)

D. 5 Var(X)+3

143. The first moment about means is always_________________?
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A. Negative

B. 1

C. None of these

D. Zero
144. Arithmetic Mean is___________affected by extreme values?
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A. None of these

B. Less

C. Not

D. Highly
145. Quartile Coefficient of skewness lies between______________?
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A. -1 and +1

B. 0 and 1

C. -1 and 0

D. None of these

146. Use of Statistics in planning is ____________?
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A. Useless

B. Unavoidable

C. Samples

D. Various Methods

147. If 10% is added to each value of variable, the geometric mean of new variable is added by_______________?
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A. 10%

B. 110%

C. 5%

D. 90%

E. No Change

148. Population census is conducted through_______________?
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A. Investigation

B. Sample survey

C. Accounting

D. Complete enumeration
149. Which one is the not measure of dispersion?
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A. Variance

B. Inter-Quartile Range

C. 50th Percentile

D. The Range

150. In Statistics, a population consists of:_____________?
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A. All People living in a country

B. All People living in the are under study

C. None of the above

D. All subjects or objects whose characteristics are being studied