Please answer these questions.
- What is the relationship between reliability and validity? How can a test be reliable but not valid? Can a test be valid but not reliable? Why or why not?
- How does understanding probability help you understand statistics?
- How could you use standard scores and the standard distribution to compare the reading scores of two students receiving special reading resource help and one student in a standard classroom who does not get special help?
- In a standard normal distribution: What does a z score of 1 represent? What percent of cases fall between the mean and one standard deviation above the mean? What percent fall between the mean and -1 to +1 standard deviations from the mean? What percent of scores will fall between -3 and +3 standard deviations under the normal curve?