Question
1. Name the mean, median, mode and standard deviation for the following data: 10 students are asked to report their current stress levels on a
1. Name the mean, median, mode and standard deviation for the following data:
10 students are asked to report their current stress levels on a scale of 1-32: The values are 3, 6, 7, 8, 8, 9, 9, 14, 18, 10
2. What total percentage of scores lie within 2 standard deviations of the mean score in a normal distribution of z-scores. (Hint: Refer to Normal distribution graph)
For answers 3 and 4 refer to the example below:
In the past year James has moved to a new state, changed jobs, andexperienced the end of a relationship. The Holmes and Rahe Stress Scale (HRSS) is used to assess one's cumulative stressin the past year and this score (1-600) is used to assess their risk for developing some sort ofmental health condition. The mean score is 250 with a standard deviation of 20. James completes the HRSS and receives a score of 294.
3. Calculate James' z-score and determine what percent of scores in the population distribution are higher than his? Hint: You will need to refer to the normal curve table in the appendix of your textbook.
4. If James were to score in the top 50 percent of all individuals completing the HRSS what would his minimum raw score on the questionnaire need to be? Hint: You will need to refer to the normal curve table in the appendix of your textbook.
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