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EPPP Exam Questions Already Rated A+

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EPPP Exam Questions Already Rated A+ 1. In which type of graph do the bars touch to indicate the overlapping nature of the data? - a) bar graph - b) histogram ️ - c) pie chart - d) scatterplot 2. Which scale of measurement is dichotomous/categorical and does not have a specific order, equal ...

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  • August 15, 2024
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EPPP Exam Questions Already Rated A+


1. In which type of graph do the bars touch to indicate the overlapping nature of the data?

- a) bar graph

- b) histogram ✔️

- c) pie chart

- d) scatterplot



2. Which scale of measurement is dichotomous/categorical and does not have a specific order, equal
intervals, or an absolute zero?

- a) nominal ✔️

- b) ordinal

- c) interval

- d) ratio



3. Which scale of measurement would be used to measure the places achieved in a horse race?

- a) nominal

- b) ordinal ✔️

- c) interval

- d) ratio



4. Which scale of measurement would be used to measure temperature?

- a) nominal

- b) ordinal

- c) interval ✔️ (no absolute zero)

- d) ratio



5. Which scale of measurement would be used to measure reaction time in seconds?

, - a) nominal

- b) ordinal

- c) interval

- d) ratio ✔️



6. Which type of distribution is peaked?

- a) platykurtic

- b) kurtosis

- c) leptokurtic ✔️



7. In a positively skewed distribution, which has the largest value?

- a) mean ✔️

- b) median

- c) mode



8. In a negatively skewed distribution, which has the largest value?

- a) mean

- b) median

- c) mode ✔️



9. What should you use as a measure of central tendency when there are outliers?

- a) mean

- b) median ✔️

- c) mode



10. What should you use as a measure of central tendency when there are no outliers?

- a) mean ✔️ (it is more precise)

- b) median

, - c) mode



11. Which of these is not a prediction of the central limit theorem?

- a) as sample size increases, the sampling distribution of the mean approaches a normal distribution

- b) mean of the sample should equal the population mean

- c) the median of the sample should equal the population median ✔️

- d) SD of the sampling distribution should equal the population SD divided by the square root of the
sample size



12. What is the level of significance?

- a) alpha ✔️

- b) beta

- c) 1-alpha

- d) 1-beta



13. What refers to the tendency to incorrectly reject the null hypothesis?

- a) Type I error ✔️

- b) Type II error



14. What error is made when the researcher accepts the null hypothesis but it is actually false?

- a) Type I error

- b) Type II error ✔️



15. The probability of making a Type I error is:

- a) alpha ✔️

- b) beta

- c) 1-alpha

- d) 1-beta

, 16. The probability of making a Type II error is:

- a) alpha

- b) beta ✔️

- c) 1-alpha

- d) 1-beta



Increased power refers to the:

a) ability to correctly reject the false null hypothesis

b) ability to correctly accept the false null hypothesis ✔️a) ability to correctly reject the false null
hypothesis



All of these increase statistical power except:

a) reducing alpha (.01 instead of .05)

b) large sample size

c) one-tailed test

d) controlling for extraneous variables ✔️a) reducing alpha (.01 instead of .05)--power is increased by
increasing alpha (but this also increases the probability of making a Type I error); decreasing alpha gives
you more confidence but less power



Which of the post hoc analyses are vulnerable to a Type I error?

a) Scheefe

b) Tukey

c) Fishers ✔️Fishers; the others are vulnerable to a Type II error



Which statistical test is suitable for using on nominal data?

a) chi-square

b) Mann-Whitney U

c) t-test

d) multiple regression ✔️a) chi-square

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