biostats week 4 review

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17 Terms

1

Pearson's Correlation

A method to describe the connection between two numeric variables.

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2

Correlation

Indicates the direction of a relationship but not its strength.

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3

Linear Regression

A technique used to determine a target variable and create models for prediction.

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4

Explanatory Variable

The variable (x) that is used to predict the response variable (y).

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5

Slope of Regression

Represents the change in the response variable (y) for a one-unit increase in the explanatory variable (x).

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6

Sampling Frame

A list or method used to define the population from which a sample is drawn.

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7

Experimental Design

Involves random treatment assignment to establish causation.

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8

Observational Study

May have confounding variables and does not involve random treatment assignment.

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9

Cohort Study

A study design that is prospective and has one control group without the outcome.

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10

Case-Control Study

A retrospective study design comparing subjects with and without an outcome.

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11

Recall Bias

A type of bias that occurs when participants do not accurately remember past events.

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12

Blinding

A method where the experimenter, participant, or statistician is unaware of the treatment assignment.

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13

Random Treatment Assignment

Essential for making causal claims in experimental designs.

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14

Measures of Center

Statistical measures that summarize a set of data, including mean, median, and mode.

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15

Variance

A measure of variability that represents the average of the squared differences from the mean.

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16

Resistant Measure of Variability

A measure that is not affected significantly by outliers in the data.

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17

Five Number Summary

A summary that includes the minimum, first quartile, median, third quartile, and maximum of a dataset.

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