statistics Flashcards
1
Q
dependent
A
value depends on the other value
2
Q
drawing scatter graphs
A
if applicable, controlled x, dependent yr
3
Q
Interpolation
A
Between upper and lower bounds of data
4
Q
Extrapolation
A
Beyond given data (less reliable, relationship may not continue to be linear
5
Q
Steep + large positive syy
A
small sxx
6
Q
shallow + positive//negative
A
small syy, large sxx
7
Q
y on x
A
y=a+bx
predicting y given x
minimise distances in x-direction
8
Q
residuals
A
distance of a point from a regression line
9
Q
Σresiduals
A
0
10
Q
r
A
-1≤ r ≤1
measure of correlation
11
Q
PMCC conditions
A
data evenly spread within an ellipse
bivariate normal distribution (2 variables, continuous, random)
12
Q
A
13
Q
A
