Descriptive Stats

Question 1

Descriptive stats include

Answer 1

mean
median
mode
range
standard deviation

Question 2

Inferential Statistics

Answer 2

confidence intervals
correlations/regressions
T-tests/ANOVAs
MANOVA/ANCOVA

Question 3

Standard Deviation

Answer 3

describes overall spread of data
1 SD = 68% of data
2 SD = 95%
3 SD = 99%

Question 4

Positive Skew

Answer 4

Question 5

Negative skew

Answer 5

Question 6

Confidence Interval

Answer 6

estimates how well the sample mean represents the population mean

increases as sample size increases

Question 7

Standard Error of the Mean

Answer 7

used to compute the confidence interval

SE = standard error of the mean
s = standard deviation of the sample
n= sample size