Top 150+ Solved Psychological Statistics MCQ Questions Answer
Q. The critical region is the region of
a. rejection of h0 when h0 is false
b. acceptance of h0 when h0 is false
c. rejection of h0 when h0 is true
d. none of these
Q. Under which of the following circumstances ‘t’ distribution is used?
a. sample size less than or equal to 30
b. population standard deviation is unknown
c. both (a) and (b)
d. none of these
Q. Which of the following are the properties of ‘t’ distribution?
a. ranges from minus infinity to plus infinity
b. ‘t’ distribution does not vary with ‘n’
c. both (a) and (b)
d. none of these
Q. As sample size increases the ‘t’ distribution approaches a
a. binomial distribution
b. gamma distribution
c. poisson distribution
d. normal distribution
Q. The degrees of freedom for which the tabled ‘t’ value is found for test of significanceof mean is given by
a. n
b. n – 2
c. n – 1
d. none of these
Q. The degrees of freedom for testing significance of difference between two means forsmall independent samples is
a. n1 + n2
b. n1 + n2 -1
c. n1 + n2 – 2
d. none of these
Q. If the samples are dependent, the difference between mean can be tested using theformula.
a. t = nsd
b. t = nsd
c. 2 nsd
d. nsd
Q. Normal distribution was defined specially by ------- a) Laplace b) Gauss c) DeMoivre d) None of these59.Which of the following is significance of normal distribution in statistical analysis?
a. many of the dependent variables are commonly assumed to be normally distributed
b. many of the statistical techniques in inferential statistics assumes normality of variable.
c. the theoretical distribution of the hypothetical set of sample means is approximately normal.
d. all of the above
Q. Which of the following is incorrect about normal distribution?
a. it is symmetrical with respect to the ordinate at mean.
b. mean, median and mode coincide
c. ordinate is minimum at the mean
d. none of these
Q. A normal curve shows 1. a distribution of mentally normal persons 2. population distributed equally in various parts3. greater percentage of cases distributed about the mean score 4. lesser percentage of cases belonging to extreme scores
a. only 1 and 2 are true
b. only 3 and 4 are true
c. all are true
d. all are false
Q. A mesokurtic distribution curve is a
a. normal probability curve
b. bell shaped curve
c. both (a) and (b)
d. none of these
Q. A leptokurtic distribution shows
a. a bell shaped curve
b. skewness
c. steep rise in the middle
d. upto some extent it shows all of these
Q. Which of the following is application of normal curve?
a. used to convert a raw score into standard score
b. useful in calculating percentile rank of scores
c. for normalizing a given frequency distribution
d. all of the above