Part 3 Flashcards
Arithmetic average of ALL scores
Mean
Middle score
Median
Most frequent score
Mode
How spread out about the mean scores
Measure of variability
Difference between highest and lowest score
Range
Measure of the average differences
Standard Deviation
Average squared differences of the scores from the mean
Variance
Position of raw score in terms of distance from mean
Z- score
Above (+)
Below (-)
Normally shaped distribution with a mean of 0
Standard normal distribution
How significanct the differences between group means (compare two means)
T-test
Ratio on difference between two groups
T-score
Probability that results from sample
P-value
Compares the means for 2 groups
Independent sample T-test
Compared means from the same group at different times
Paired sample T-test
Test single group against a known mean
One sample T-test
