# Week Six Hw Essay

766 words - 4 pages

Define the following terms:

Descriptive statistics is the term to describe the main or basic features of a research study.
Scales of measurement is the term to describe the four scales of measurements: Nominal, Ordinal, Interval, and Ratio.
Measures of central tendency is the term to describe the mean, median, and mode.
Frequency distributions is the term to describe the process in dividing the groups in the research.
Correlation coefficient is the term to describe the Pearson’s r (strength of the relationship between two things).
Effect size is the term to describe the strength of an event.
Multiple regression is the term to describe the process of the prediction of one value, ...view middle of the document...

Outliers skew the mean, whereas the skewed data, the mean loses
it’s ability to provide the most efficient central location for the data, due to the skewed data
effecting the typical value.

True or false: The standard deviation and the range are sensitive to outliers. Explain your response.
True: the standard deviation is thrown off from the data collection when there is a cluster of
data presented.
True or false: The standard deviation can never be 0. Explain your response.

False: Due to the numbers in the data, the standard deviation can be zero, because the data
sets are never equal. Therefore, there will be no variation from the set mean.

A researcher is investigating the effects of anxiety on creativity. Individuals with varying levels of anxiety are asked to complete a measure of creativity. The results show a classic U-shaped distribution; that is, individuals with moderate levels of anxiety score the highest on tests of creativity. Individuals with very low or very high levels of anxiety score much lower on tests of creativity. What would be a good statistic to use in this case? Explain your response.
No, because the levels of anxiety are measured using an ordinal scale. (low, medium, to
high). The Creativity test scores are measured utilizing a nominal scale, because the
researcher can assign a number to distinguish the particular test scores.

What are...

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