Question

Scatter plots give a visual representation of the strength and direction of the correlation coefficient. True...

Scatter plots give a visual representation of the strength and direction of the correlation coefficient.

True or False

When you have significant results in data analysis, it is customary to report all relevant means and standard deviations.

True or False

Math   Statistics-And-Probability   
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Answer #1

Scatter plots give a visual representation of the strength and direction of the correlation coefficient.

True.

A scatterplot displays the strength and direction, and form of the relationship between two quantitative variables.The correlation r measures the strength of the linear relationship between two quantitative variables.

When you have significant results in data analysis, it is customary to report all relevant means and standard deviations

False

Statistical hypothesis testing is used to determine whether the result of a data set is statistically significant.

say for example if you have p-value less than the significance level Decision: Reject the null hypothesis.

if you have p-value freater than the significance level Decision: DO NOT REJECT the null hypothesis

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