1) What is the difference between probability distributions and frequency distri

Question

1) What is the difference between probability distributions and frequency distributions? Provide an example that demonstrates the difference between the two.

2) How does a normal curve relate to a probability distribution? How and why can we make predictions about the occurrence of an event using a theoretical normal curve?

3) What is the standard error of the mean and why is it important?

4) How can the concepts from chapters 5 and 6 be used in social research?

Use the article Burnout in psychiatric nursing: a meta-analysis of related variables to answers questions 6 and 7:

6) Provide the 95% confidence intervals for the following variables: job satisfaction, staff support, role conflict, and involvement with organization. (Answers can be found in table 4)

7) Which variable had the largest conconfidence interval (meaning which interval was the widest; ie. 1 to 5 is wider than 1 to 3)? Why do you think that variable had the widest interval (to answer this make sure you understand what a confidence interval is, how it is computed)?

Explanation / Answer

Prob distribution gives a value of x single time and probability whereas frequency distribution gives

x values how many times repeated i.e. x and frequency of x

2) NOrmal curve is symmetric about mean. Hence we assume that area to left of mean = right of mean = 0.50

3) Std error of the mean = std dev of sample/rt n

Mean(Population) follows a normal distribution with (x bar, and std error)

4) ..

5) Table missing

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