correlations and descriptive statistics

Question 1

what are aspects of the measures of central tendency?

Answer 1

• affected by extreme scores
• includes all values in the data set
• can be used on categorical data

Question 2

what are the two measures of dispersion?

Answer 2

• range
• standard deviation

Question 3

what are the measures of central tendency?

Answer 3

mode, median, mean

Question 4

what is the difference between correlations and experiments?

Answer 4

• correlations aren’t experiments as there is no manipulation of an IV to measure to effect on a DV
• correlations illustrate the strength and direction of an association between co-variables