Psychological Statistics Set 3
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This set of Psychological Statistics Multiple Choice Questions & Answers (MCQs) focuses on Psychological Statistics Set 3
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
- categories
- levels
- factors
- none of these
Q16 | In ANOVA different categories of an independent variable are called.
- factors
- levels
- groups
- blocks
Q17 | If there are more than one independent variables we use
- one way anova
- anova for factorial design
- both (a) and (b)
- none of these
Q18 | In one way ANOVA how many F values are calculated
- 2
- 3
- 1
- 5
Q19 | If there are two independent variables then how many effects are found in ANOVA?
- 1
- 2
- 3
- 4
Q20 | Which of the following statements are true about Two-way ANOVA with 2 x 3 design.
- there are two independent variables
- the first independent variable has two levels
- the second independent variable has 3 levels
- all of the above
Q21 | For testing the significance of difference between means, ANOVA analyses ------
- means
- standard deviations
- correlations coefficients
- variances
Q22 | In one way ANOVA, if the calculated F value is greater than the tabled value of F, then
- mean difference between all pairs of groups will be significant
- mean difference is not significant
- mean difference between more than two groups in the set will be significant
- mean difference between atleast two groups in the set will be significant
Q23 | Which of the following is true about ANOVA?
- it is a non parametric test
- homogeneity of variance is not a basic assumption
- it is a parametric test
- assumption of normality is not necessary
Q24 | The calculated value of kurtosis in terms of percentile for a given data is found tobe 0.321, then the distribution is
- mesokurtic
- leptokurtic
- platykurtic
- none of these
Q25 | The process of grouping the related data in to classes is called
- Collection
- Tabulation
- Grouping
- Classification