Charles Finds That the Correlation Coefficients Between His Predictor Variable

question 8

Multiple Choice

Charles finds that the correlation coefficients between his predictor variable and three different outcome variables are +.23, +.45, and -.53. Which correlation coefficient indicates the strongest linear relation that Charles found between his predictor and outcome variables?

• A) +.23
• B) +.45
• C) -.53
• D) not enough information is provided

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Definitions:

APCs

Antigen-presenting cells, a type of immune cell that displays foreign antigens to T-cells, initiating an immune response.

Memory Cells

B or T cells (lymphocytes) that permit rapid mobilization of the immune response on second or subsequent exposure to a particular antigen. See memory B cells and memory T cells.

Dendritic Cells

Immune cells that process antigen material and present it on their surface to other cells of the immune system, playing a critical role in triggering adaptive immunity.

Natural Killer Cells

A type of lymphocyte (white blood cell) that plays a major role in the rejection of tumors and cells infected by viruses.