- BYU Home
- FHSS
- Psychology
- Psychology 301
- Chapter 6
Chapter 6 Questions
Complete the following questions. The questions may include pictures or graphics to illustrate or aid in solving the problem. You can check your answer by clicking View Answer. If the question is unclear, confusing, or if you need further clarification, send me an email.
1. Z-Scores activity.
Answer
2. Given the data in chapter five, calculate the z-scores for each raw data point.The data will then be used for questions 3-7 below.
Answer
3. What proportion of all scores in this sample falls between the raw scores of 65 and 35?
Answer
The area between z = .79 and z = -.79 is .5704. This is calculated by checking the "Mean to z" column for z = .79, which is .2852, and multiplying this value by 2.
4. What proportion of all scores in this sample is above a raw score of 40?
Answer
The area above z = -.53 is .7019. This is calculated by checking the "Mean to z" column for z = -.53, which is .2019, and adding .5 to this for the positive half of the distribution.
5. What proportion of all scores in this sample is above a raw score of 60 and below 35?
Answer
Area above z =.53 and below z = -.79 is .5129. This is calculated by looking in the "Smaller Portion" column for z =.53, which is .2981, and for z = -.79, which is .2148, and adding these values together.
6. What would the raw scores that border the middle 50% of all the raw scores be for this data set? (Hint: these scores don't actually exist in the sample. You'll have to calculate what they would be.)
Answer
7. What would the raw scores that border the middle 30% of all the raw scores be for this data set? (Hint: these scores don't actually exist in the sample. You'll have to calculate what they would be.)
Answer
