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Author Question: What does bivariate correlational analysis do? (Select all that apply.) a. Provides an idea of ... (Read 77 times)

kodithompson

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on: Jul 8, 2018
What does bivariate correlational analysis do? (Select all that apply.)
 
  a. Provides an idea of which variable causes the other one
  b. Reflects a two-way connection or pattern
  c. Measures the strength of multiple relationships connected with a concept
  d. Measures the strength of the relationship between two variables
  e. Determines the direction of the relationship between two variables

Question 2

A Pearson's correlational analysis examines the relationship between variable A, hours of sleep per week, and B, symptom severity, in 43 women with post-polio syndrome.
 
  In accessing the table of values, the researcher uses which of the following numbers for degrees of freedom?
  a. 2
  b. 4
  c. 41
  d. 43


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Benayers

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Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: B, D, E
Bivariate correlational analysis measures the magnitude of linear relationship between two, and only two, variables and is performed on data collected from a single sample. Correlational analysis provides two pieces of information about the data: the nature or direction of the linear relationship (positive or negative) between the two variables and the magnitude (or strength) of the linear relationship.

Answer to Question 2

ANS: C
Every inferential statistic has is own formula for degrees of freedom (numbers of values that are free to vary). The formula for degrees of freedom (df) for a Pearson r is n  2. Thus, in this case, the df is 43  2 = 41.


kodithompson

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Reply 2 on: Jul 8, 2018
Wow, this really help

juliaf

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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