If We Were to Graph Two Variables, Let's Say, Height

question 59

Multiple Choice

If we were to graph two variables, let's say, height (in centimetres) and GPA, and the graph showed points scattered about in a formless shape, we could say there is:

• A) likely no significant relationship between height and GPA.
• B) likely a positive relationship between height and GPA.
• C) likely a negative relationship between height and GPA.
• D) a need to re-graph the data.
• E) likely a curvilinear relationship between height and GPA.

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Definitions:

Wilcoxon Signed Rank Test

A non-parametric statistical test used to compare two related samples, matched samples, or repeated measurements on a single sample to assess differences.

Nonparametric Test

A type of statistical test that does not assume your data comes from a particular distribution.

Matched-Pairs Sample

A study design where subjects are paired based on certain characteristics, and each pair is treated differently to study effects of a variable.

Interval Data

A type of numerical data where the distance between two points is meaningful, including temperatures and dates.