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Psy302 Quantitative Methods. Exam One Review Quiz. 1. The symbol µ represents:. a parameter the variance the sample mean the population standard deviation a statistic. The symbol µ represents:. a parameter the variance the sample mean the population standard deviation
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Psy302 Quantitative Methods Exam One Review Quiz
1. The symbol µ represents: • a parameter • the variance • the sample mean • the population standard deviation • a statistic
The symbol µ represents: • a parameter • the variance • the sample mean • the population standard deviation • a statistic
2. In order to calculate the variance you must first calculate the: • standard deviation • Z score • median • deviation score • square root
In order to calculate the variance you must first calculate the: • standard deviation • Z score • median • deviation score • square root
3. Which of the following uses all the data? • median • Range • Variance • Mode • b & c
Which of the following uses all the data? • median • Range • Variance • Mode • b & c
4. Lorenzo scored at the 10th percentile. What would be his Z score? • 1 • –1.2 • 2.3 • –2.2 • 10
Lorenzo scored at the 10th percentile. What would be his Z score? • 1 • –1.2 • 2.3 • –2.2 • 10
5. What is Vikeisha’s individual deviation score? • -1 • 2 • 3 • 4 • 0
What is Vikeisha’s individual deviation score? • -1 • 2 • 3 • 4 • 0
6. Use table A to find the value of Z with 25% of the observations falling below it? • -.675 • .2533 • –1.66 • . 9978 • -.2533
Use table A to find the value of Z with 25% of the observations falling below it? • -.675 • .2533 • –1.66 • . 9978 • -.2533
7. Which of the following is a measure of variability? • Spread • Range • Mean • Correlation • skewness
Which of the following is a measure of variability? • Spread • Range • Mean • Correlation • skewness
8. Cameron scored 85 on a test with a mean of 75 and a standard deviation of 5. Kristen scored 85 on a test with a mean of 75 and a standard deviation of 10. Assuming normal distributions, who is the better student? • Kristen • Cameron • both are the same • can't say from these data
Cameron scored 85 on a test with a mean of 75 and a standard deviation of 5. Kristen scored 85 on a test with a mean of 75 and a standard deviation of 10. Assuming normal distributions, who is the better student? • Kristen • Cameron • both are the same • can't say from these data
9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best?to answer • Kyle • Mary • Need to know the standard deviation to answer • need to know the mean to answer • C & D
9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best?to answer • Kyle • Mary • Need to know the standard deviation to answer • need to know the mean to answer • C & D
10. What percent of scores lie below a z score of +1? • 84% • 16% • 68% • 50% • 95%
10. What percent of scores lie below a z score of +1? • 84% • 16% • 68% • 50% • 95%