statistics MCQs – Page 12

Practise multiple-choice questions from statistics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

statistics Mcqs

1. sample linear regression 2. normal distribution 3. presentation of data 4. statistical inference 5. measures of location 6. basic statistics 7. correlation and regression 8. sampling 9. binomial and hyper geometric probability 10. index number 11. hypothesis testing 12. measures of dispersion

221. The collection of one or more outcomes from an experiment is called:__________________?
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A. Event

B. Z-Value

C. Random Experiment

D. Random Variable

E. Probability

222. The algebraic sum of deviations from mean is_____________?
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A. Zero

B. Undefined

C. Minimum

D. Maximum

223. The process of selecting sample from the population is called_________________?
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A. Sampling unit

B. Sampling

C. Sampling process

D. Size

224. If the standard deviation of a population is 9, the population variance is_____________?
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A. 21

B. 3

C. 81

D. 9

225. The probability of getting exactly two heads when two balanced coins are toss once_________________?
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A. 4-Apr

B. 1/4

C. 4-Mar

D. 4-Feb

226. The number of defective bulbs in a lot is example of ____________?
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A. Function

B. Discrete variable

C. None of these

D. Continuous variable

227. In x = 2 _________ 6y the value of y are increasing by one unit then values of x are?
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A. Increasing by 6

B. Non of these

C. Decreasing by 6

D. No change

228. The probability of drawing a picture card out of 52 cards is : ______________?
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A. 13/52

B. 16/52

C. 12/52

D. Mar-52

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

B. None

C. Greater

D. Equal

230. The probability of getting exactly three tails when three balanced coins are tossed once _______________?
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A. 8-Jul

B. 8-May

C. 8-Feb

D. 1/8

231. Dependence of difference on statistics is for_______________?
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A. Three reasons

B. Short run

C. Two reasons

D. Natural Sciences

232. Sum of dots when two dice are rolled is____________?
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A. a continuous variable

B. a constant

C. a discrete variable

D. a qualitative variable

233. A sample estimate is used to describe a characteristic of a_____________?
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A. Sample

B. Population

C. None

D. Data

234. Selection of s by the students to solve a paper is _________________?
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A. Sampling with replacement

B. Random sampling

C. Non-random sampling

D. Prob.Sampling

235. In a Poisson probability distribution __________________?
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A. The probability of success is always greater than 5

B. The number of trials is always less than 5

C. The mean and variance of the distribution are same (equal)

D. it always contains a contingency table

236. In statistics, conducting a survey means_____________?
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A. Collecting information from elements

B. None of the above

C. Making mathematical calculations

D. Drawing graphs and pictures

237. If a and b are two constants, then Var(a+bX) is_______________?
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A. Var(a)Var(X)

B. b2Var(X)

C. (ab)Var(X)

D. abVar(X)

E. bVar(X)

238. 2nd Quartile = 5th Decile = 50th Percentile = ?
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A. Mean

B. Harmonic Mean

C. Geometric Mean

D. Median

E. Mode

239. If A denotes the males of a town and B denotes the females of that town, then A and B are:___________?
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A. Equal sets

B. Over lapping sets

C. Non- overlapping sets

D. None of these

240. When data are collected in a statistical study for only a portion or subset of all elements of interest we are using?
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A. A sample

B. A Parameter

C. A Population

D. Both b and c

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