statistics MCQs – Page 14

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 Review each marked answer and report any item that may be outdated or unclear.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

261. If bxy = -.8 by x = 1.2 then value of r is ________________?
0

A. ?-.96

B. ?.96

C. 0

D. None of these

262. Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
0

A. 70

B. 50

C. 50/20

D. 50-20 = 30

E. 50

263. A model is linear if it is linear in the dependent variable and also in ______________?
0

A. Non of these

B. Error term

C. Independent variable

D. Parameter

264. If a card is chosen from a standard deck of cards, what is the probability of getting a five or a seven ?
0

A. 1/169

B. 8/52

C. Apr-52

D. 26-Jan

265. The probability of an event cannot be _____________?
0

A. Zero

B. Negative

C. None of these

D. Positive

266. E(ax + b) = A E(x) +___________________?
0

A. b

B. b E(a)

C. (C)

D. E(x)

267. Two event are said to be equally likely is ______________?
0

A. As any other

B. both event occurs

C. One occurs

D. not both occurs

268. A discrete probability distribution may be represented by____________?
0

A. All of these

B. A Table

C. A Graph

D. A mathematical Equation

269. Population census is conducted through_______________?
0

A. Accounting

B. Sample survey

C. Complete enumeration

D. Investigation

270. Which one of the following measurement does not divide a set of observations into equal parts ?
0

A. Deciles

B. Standard Deviations

C. Median

D. Percentiles

E. Quartiles

271. Which of the following is not based on all the observations ?
0

A. Weighted Mean

B. Harmonic Mean

C. Arithmetic Mean

D. Mode

E. Geometric Mean

272. Var(2X+3) is________________?
0

A. 4 Var(X)+3

B. 5 Var(X)

C. 5 Var(X)+3

D. 4 Var(X)

273. If x = 3 then value of regression co-efficient of X or Y is ________________?
0

A. (0)

B. -4

C. -3

D. -3

274. If in a sampling distribution of X the sample size is 25, what assumption must hold for the sampling distribution of X to be normal ?
0

A. ?x = ?x /?n

B. Population distribution is uniform

C. Population distribution is normal

D. ?1 = ?x

275. In w.o.r 2?x=_____________________?
0

A. ?/?n?N n/N 1

B. 26/?n N n/N 1

C. 26/?n?N n/N 1

D. 26/?n

276. Two attributes are associated if expected frequency is ____________________?
0

A. Equal to observed

B. Greater than observed

C. Less than observed

D. None of these

277. Which of these represent qualitative data______________?
0

A. Liking or disliking of (500) persons of a product

B. Income of a government servant in a city

C. Yield from a wheat plot

D. Height of a student

278. A listing of the possible outcomes of an experiment and their corresponding probability is called:______________?
0

A. Contingency table

B. Bayesian table

C. Probability distribution

D. Random Variable

E. Frequency distribution

279. If x and y are Independent to each other the coefficient of correlation is _____________?
0

A. -1

B. 0.6

C. 1

D. 0

280. Regression co-efficient is denoted by_____________?
0

A. by

B. m

C. bzx

D. byx

Previous Next

Showing 261 to 280 of 1376 mcqs