What makes a distribution of scores not normal? Stated differently, what makes a distribution of scores skewed?
What will be an ideal response?
Ans: A distribution is normal when the mean, median, and mode are all approximately equal and the distribution forms a symmetrical bell curve. Stated differently, a distribution of scores is skewed when there are outliers in the dataset, causing the mean to be greater than or less than the median and mode.
You might also like to view...
An intergenerational approach to providing volunteers to a school-age program is
a. a new concept as intergenerational contact for children has been important only in recent years. b. a benefit in particular to children from nuclear and mobile families who may miss the experience of spending time with seniors. c. very difficult to achieve and should be considered only as a last resort in utilizing community resources. d. likely to work best in the inner cities where transportation is not such a barrier.
One way of providing some control in ex post facto research is
a. to use analysis of covariance. b. to do a pilot study before carrying out the main research. c. to match the subjects of the groups to be compared on as many extraneous variables as possible. d. a and b e. a and c
Because of the limitations of ex post facto research, it should
a. rarely be used in educational research. b. be interpreted with caution. c. be used carefully by those interested in important variables which cannot be manipulated. d. be replaced by analysis of variance techniques. e. b and c.
The mixed methods approach has become more appealing as a research method due to
a. the compatibility between the qualitative and quantitative approaches when both are used in a study. b. its pragmatic nature to seek meaningful answers to a complicated phenonemon. c. a high level of agreement among researchers on the philosophical underpinnings of the method d. its ability to replace the qualitative and quantitative approaches to research.