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What is the level of measurement of the variable presented in this table?
Table 1 Frequency Counts and Percentages on Center for Epidemiologic Studies Depression Index
(CES-D) Scores
Range of Scores total n=120 percentage%
0-15 (not depressed) 76 63
16-20 mild depression 15 12.5
21-30 moderate depression 15 12.5
> or equal to 31severe dep 14 12
a.Nominal
b.Ordinal
c.Interval
d.Ratio
2.What are degrees of freedom? How are they calculated? 3.What do inferential statistics allow you to infer? 4.What is the General Linear Model (GLM)? Why does it matter?
let x1 x2 x3 and x4 be four mutually stochastically independent random variables with the same pdf fx 2x 0ltxlt1 zero
imagine that a student takes a 20-item multiple choice exam. she didnt study so all of her answers are guesses. each
Recall the 68-95-99.9% observation discussed in the "Normal Distribution" section of the textbook that is helpful in answering the
What is its standard deviation of this data set? What are the upper and lower values of 67% range of the flows and how do these compare to the upper and lower values of the full range of data?
radioactive substances emit -particles. the number of such particles reaching a counter over a given time period
A sample of 12 people was asked how much change they had in their pockets and wallets. The responses (in cents) are 52 25 15 0 104 44 60 30 33 81 40 5 Determine the mean, median, and mode for these data. 4.2 The number of sick days due to colds and f..
Shown below are the top food and drug stores in the United States in a recent year according to Fortune magazine.
You are concerned that first administration of attitudes measure may create pretest sensitization, thereby directly affecting participants attitudes. Explain how you could redesign the experiment to see whether pretest sensitization occurred.
Perform the hypothesis test you set up in with the significance level and Does the FICO credit rating score appear to affect mortgage payments - does cocaine use appear to affect the birth weight of a baby
Mean and standard deviation are 584.6 and 34.28
Suppose a person is selected at random. Label each pair of events as mutually exclusive or not mutually exclusive.
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