1. Which is the middle-most score in a skewed distribution:
- correlation
- median
- mean
- mode
2. SS is a measure of:
- central tendency
- stratification
- dispersion
- skew
3. Which statistic should you calculate to predict a future event:
- regression
- ANOVA
- t-test
- MAD
4. What do you do if the calculated value is larger than critical value:
- portion the null
- stratify the null
- accept the null
- reject the null
5. A distribution with the mean higher than the median is:
- negatively skewed
- positively skewed
- bimodal
- normal
6. Given the following information:
- SSx = 44.7
- stdevY = 3
- r = .4
- t= 2.73
Calculate the coefficient of determination:
7. Given the following information, calculate F:
SS df ms
Between 160 2
Within 120 12
Total 280 14
F =
8. Spelling tesst use what level of measurement:
- nominal
- ordinal
- interval
- ratio
9. Variance for a sample is calculated by dividing SS by:
- n-2
- n-1
- n
- r
10. The 64th percentile corresponds which z score:
- – 1.5
- – 1.0
- + 1.0
- + 1.5
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Answers
1. Which is the middle-most score in a skewed distribution:
- correlation
- median
- mean
- mode
2. SS is a measure of:
- central tendency
- stratification
- dispersion
- skew
3. Which statistic should you calculate to predict a future event:
- regression
- ANOVA
- t-test
- MAD
4. What do you do if the calculated value is larger than critical value:
- portion the null
- stratify the null
- accept the null
- reject the null
5. A distribution with the mean higher than the median is:
- negatively skewed
- positively skewed
- bimodal
- normal
6. Given the following information:
- SSx = 44.7
- stdevY = 3
- r = .4
- t= 2.73
Calculate the coefficient of determination: r-squared = .16
7. Given the following information, calculate F:
SS df ms
Between 160 2 80
Within 120 12. 10
Total 280 14
F = 80/10 = 8
S8. Spelling test use what level of measurement:
- nominal
- ordinal
- interval
- ratio
9. Variance for a sample is calculated by dividing SS by:
- n-2
- n-1
- n
- r
10. The 64th percentile corresponds which z score:
- – 1.5
- – 1.0
- + 1.0
- + 1.5
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