interpretations

Question 1

Percentile

Answer 1

% of subjects scored less than [main subj]

Question 2

SD

Answer 2

[Content] typically varies by [SD] from the mean of [mean]

Question 3

Z-score

Answer 3

Relatively speaking, [subj] is [great/lesser] in comparison to [other subjects, condition]

Question 4

Unusual percentile

Answer 4

5%

Question 5

SD (general)

Answer 5

[subj] is # [SDs] above/below the mean

Question 6

SD of residuals

Answer 6

The typical difference between [y] and the mean [y] is [SD]

Question 7

Regression Line
Slope

Answer 7

When [x] increases by 1/base unit, the predicted [y] increases by [slope]

Question 8

Regression Line
Intercept

Answer 8

When [x] is 0, the predicted [y] is [intercept]
- Optional: not reasonable because of extrapolation

Question 9

r^2

Answer 9

% of change in response is explained by [x]

Question 10

residual

Answer 10

[x and y in context] is [resid units] below/above predicted [y]

Question 11

Residual Plot

Answer 11

scattered = linear
clear pattern = non-linear

Question 12

Probability – Basic

Answer 12

If I select many, many [units], the proportion that [does wtv] would be [proportion].

Question 13

Probability – Mean, E(x)

Answer 13

If you randomly select [unit] out of many, many [units], they’re expected to …. [ E(x) ] on average.

Question 14

Probability – SD (stand dev)

Answer 14

Mean + SD (combo)
If I randomly select [unit] out of many, many [units], they’re expected to … [ E(x) ] on average,
… which is typically off by [SD]