Psychological Statistics Set 3 MCQs

Q1 | Which of the following is true about skewed distribution?

it is symmetrical

mean, median and mode coincide

similar to normal distribution

the more mean moves away from mode, larger skewness

Q2 | Which of the following statements is true about skewed distribution?

either positively skewed or negatively skewed.

in positively skewed distribution mean is maximum and mode is minimum.

in negatively skewed distribution mode is maximum and mean is minimum.

all of the above

Q3 | Which of the following statements is false?

in a positively skewed distribution there is excess tail on right hand side

in a negatively skewed distribution tail more extended in the left hand side.

in a skewed distribution median lies between mean and mode.

none of these

Q4 | Which of the following statements is true about measures of skewness?

no limit for value in karl pearson’s method

value ranges from -1 to +1 in bowley’s method

value of zero indicates the curve is symmetrical

all of the above

Q5 | Which of the following statements is true about platykurtic curve as compared tonormal curve?

flatter

broader central position

lower tails

all of the above

Q6 | A distribution is leptokurtic if the calculated value of kurtosis in terms of percentile is -------

equal to 0.263

less than 0.263

greater than 0.263

none of these

Q7 | A distribution is platykurtic if the calculated value of kurtosis in terms of percentile is -------

equal to zero

less than 0.263

greater than 0.263

equal to 0.156

Q8 | ANOVA test is based on ------

variance ratio

probability ratio

random sample

none of these

Q9 | ANOVA is used when -------

there are more than two groups

there is only two groups to be compared.

significant difference between two means is to be found

none of these

Q10 | Which of the following test is used in ANOVA

t-test

z-test

f-test

none of these

Q11 | In ANOVA, F-value is calculated using which of the following formula?

variancebetween groups variancewithin groups

variancewithin groups variancebetween groups

both (a) and (b)

none of these

Q12 | The assumption basic to Analysis of Variance is

population distribution of the dependent variable follow normality

subgroups under study have same variability

groups drawn on certain criteria, randomly selected from the sub population.

all of the above

Q13 | Total sum of squares 2) Correction 3) Within sum of squares4) Between sum of squares

1, 2, 3, 4

3, 2, 4, 1

4, 3, 2, 1

2, 1, 4, 3

Q14 | The mean sum of squares (MS) is

the sum of squares multiplied by its degrees of freedom

the sum of squares divided by its degrees of freedom

the sum of squares minus its degrees of freedom

the sum of squares plus its degrees of freedom

Q15 | In ANOVA independent variables are called