Statistics sample/practice exam, questions and answers PDF

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MCQ questions & answers for SP300...

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SP300 Sample Questions 2014-15 Table 1

Males

Black 4

White 6

Asian 8

Females

9

7

4

1) Table 1 above shows the means from a study examining the average number of movies watched per week by males and females in the UK. The researchers were also interested in comparing their sample according to gender. How many conditions are there is this study? a. 4 b. 8 c. 2 d. 6 2) In the study depicted in Table 1 above, if you were interested in knowing the effects for gender only, and you had the raw data used to compute the means above, what type of analysis would you perform? a. Two-Way ANOVA b. Three-Way ANOVA c. T-Test d. Chi-Square 3) Which one of the following analyses can you use for a between- subjects design? a. Repeated Measures T-Test b. Independent samples T-Test c. Correlations d. Repeated measure ANOVA 4) The non-parametric equivalent of Pearson’s correlation is the: a. Wilcoxon Test b. Mann-Whitney U Test c. Spearman’s Rho d. Friedman Test 5) + or – 1 standard deviation in a normal distribution accounts for about: a. 78% of all estimates b. 48% of all estimates c. 58% of all estimates d. None of the above

6) In a positive correlation: a. As one variable increases the other variable increases b. As one variable increases the other variable decreases c. As one variable increases the other variable stabilizes d. There is a zigzag relationship between the two variables 7) A study has a 5 by 4 between-subjects design and it has 20 participants in each condition. In total how many participants took part in the study? a. 100 b. 300 c. 600 d. 400 8) In a regression, the size and nature of the relationship between two variables is shown by the: a. Slope b. Intercept c. Kurtosis d. None of the above 9) Estimates of values for the sample are called: a. Statistics b. Data c. Samplers d. Parameters 10)

In the formula for variance below, the top part (numerator) of this formula is called: a. Sum of Squares b. Spearman’s Rho c. Sample Size d. Degrees of Freedom

11)

What does the pattern of data in the graph below show? a. No effects of alcohol b. No effects of sleep deprivation c. An interaction effect between alcohol and sleep deprivation d. A and B

12)

A correlation is used on data where the variables are: a. Continuous b. Ordinal c. Nominal d. Balanced

13)

When the correlation is equal to -.78 what can be concluded? a. There is a non-linear relationship b. There is no linear relationship c. There is a perfect linear relationship d. There is a negative correlation

14)

A probability of p = .25 means: a. The findings are significant b. The finding are not significant c. There are strong differences between means d. The null hypothesis has not been supported

15)

If a study has one independent variable with three levels and the dependent variable is continuous, the most appropriate statistical procedure to conduct is: a. Multiple t-tests b. One-way ANOVA c. Five-way ANOVA d. Z – Test

16)

What is the median of the following set of numbers? 7 3 8 10 4 9 10 10 10 1 7 3 9 a. b. c. d.

4 7 8 10

17)

Is deception permitted in psychological experiments? a. Never b. Yes, as long as it is minimal and the participant is fully debriefed at the end of the experiment c. Yes, but only in studies involving observation in natural settings d. Yes, as long as it is minimal and the participant is rewarded generously

18)

When you perform tests of statistical significance: a. You can say the null hypothesis is true b. You can accept the alternative hypothesis c. You can decide to reject the null hypothesis d. You cannot reach conclusions

ANSWER KEY 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18)

D C B C D A D A A A C A D B B C B C...