Descriptives

A data set that has most of the data points located at the end of the x-axis (mostly grades of 100's and a few 50's, 60's, and 70's) is called

• normally distributed

• negatively skewed

• positively skewed

If you saw that a data set had a large amount of heterogeneous variance, you would likely find the:

• Levenes test to have a p-value of >.05

• normal distribution

• presence of outliers

If lower scores are better, which group had the best outcome?

• manual therapy

• exercise

• nothing

Based on this image, you would say the data are:

• skewed positively

• skewed negatively

• not-skewed

If data are non-normal, the _____ is used to describe the data.

• mean

• median

• mode

Which range had the greatest data representation?

• 80-89

• 10-19

• 40-49

• 50-59

Based on this figure, which group had the BEST outcomes (lower is better)

• nothing

• Manual therapy

• exercise

Is this data positively or negatively skewed?

• Positively skewed

• Negatively skewed

Which data set is the MOST varied?

• manual therapy

• exercise

• nothing

A Shapiro-Wilk tests yields a p value of .04, therefore we should

• reject the null hypothesis and use parametric analysis

• reject the null hypothesis and use a NON-parametric analysis

• Fail to reject the null hypothesis and use parametric analysis

• Fail to reject the null hypothesis and use a NON-parametric analysis