Multiple Choice Questions (MCQ) on Statistics
1- Following test would be appropriate to test the RANDOMNESS of a sample
(A) Wilcoxon signed rank test
(B) Median test
(C) Run test
(D) Sign test
2- Which of the following tests is used for testing the independence in linkage?
(A) Chi square test
(B) F-test
(C) t-test
(D) All of the above
3- Sum of absolute deviation is least when it is measured about
(A) mode
(B) median
(C) mean
(D) none of the above
4- In a frequency polygon, frequencies are plotted against
(A) Lower boundary of class
(B) Mid-point of class interval
(C) Upper boundary of class
(D) None of the above
5- Which of the following distribution is abnormally tall and peaked?
(A) Platykurtic
(B) Mesokurtic
(C) Leptokurtic
(D) None of the above
6- If different effects are cofounded in different replications, then it is reformed as
(A) Balanced confounding
(B) Incomplete confounding
(C) Partial confounding
(D) Complete confounding
7- Moving average method of finding trend removes the effect of
(A) cyclic variations
(B) short term movements
(C) long term movements
(D) none of the above
8- For testing the goodness of fit we use
(A) Sign test
(B) Kolmogorov-Smirnov test
(C) Run test
(D) Median
9- Neyman – Pearson lemma provides
(A) An admissible test
(B) A most powerful test
(C) An unbiased test
(D) Minimax test
10- In time-series analysis, which source of variation can be estimated by the ratio-to-trend method?
(A) Irregular
(B) Seasonal
(C) Trend
(D) Cyclical
11- Correlation coefficient always lies between
(A) -1 and 0
(B) 0 and +1
(C) -1 and +1
(D) +1 and +2
12- The geometric mean of two regression coefficients is
(A) coefficient of kurtosis
(B) coefficient of correlation
(C) coefficient of skewness
(D) coefficient of standard deviation
13- Simple random sampling is suitable when the population is
(A) infinite
(B) finite
(C) heterogenous
(D) homogenous
14- Sum of deviations of a variable from its mean is
(A) one
(B) zero
(C) maximum
(D) minimum
15- The method of confounding is a device to reduce the size of
(A) treatments
(B) blocks
(C) replications
(D) experiments
16- Moving average method is used to determine
(A) seasonal variation
(B) trend
(C) cyclical variation
(D) irregular variation
17- Irregular variation in a time series is due to
(A) flood
(B) epidemics
(C) lockouts and strikes
(D) All of the above
18- The best method for finding out seasonal variation is
(A) link relative method
(B) ratio to trend method
(C) ratio to moving average method
(D) simple average method
19- The number of components in time series data is
(A) 4
(B) 5
(C) 6
(D) 7
20- Vital rates are generally expressed as
(A) per lakh
(B) per thousand
(C) per million
(D) percentage
ANSWERS:
1-(C), 2-(A), 3-(B), 4-(C), 5-(C), 6-(C), 7-(B), 8-(B), 9-(B), 10-(B), 11-(C), 12-(B), 13-(D), 14-(B), 15-(B), 16-(B), 17-(D), 18-(C), 19-(A), 20-(B)