week 9&10- descriptive and inferential stats

extraneous variable

characteristics other than the factor of interest that may influence the outcome of a study

nominal

kind of data with named categories where one is not more important than another

ordinal

type of data where values are named categories that have a rank order, but a quantitative difference between categories does not exist

interval

kind of continuous data where negative numbers are possible and values are numeric

ratio

kind of continuous data where values are numeric and categories have a rank order, but negative numbers do not exist

nominal, ordinal

2 types of discrete data

interval, ratio

2 types of continuous data

coefficient of variation

variability among different measures of the same phenomenon or using the same measure from different samples

2

how many standard deviations away from the mean is the confidence interval (95%)?

right

if data has a positive skew, where is the tail?

left

if data has a negative skew, where is the tail?

continuous with normal distribution

what kind of data may be used with parametric stats?

nominal and ordinal, continuous with non-normal distribution

what can nonparametric stats be used with?

intraclass correlation coefficient

assessment of reliability of continuous data

type I

what kind of error is a false positive

type II

what kind of error is a false negative

alpha

what greek letter for false positive

beta

what greek letter for false negative

1

r value is there is perfect correlation

0

r value if there is no correlation

0-1

score ranking for intraclass correlation coefficient or Kappa

paired t-test

which test is repeated measures ANOVA the same as if it only has 2 samples?

ANCOVA

ANOVA with covariate

3

number of groups to do ANOVA

several dependent variables

reason for using MANOVA instead of ANOVA

0.05

value of p for Ho to be rejected

alpha

greek letter that represents significance level

1-beta

greek letter that represents power level