Stats test 2 vocab

What is the estimated regression coefficient?

Under coefficient

For example, what is the estimated regression coefficient of the equation?

go to coefficients, and its whatever slope its asking for

WHat is a bad p value in a logistic regression model?

Anything greater than .05

coefficent of detirmination

r²

What is the test statistic for a specific slope

Bj/Sbj

Mean squared equation

MS=SS/DF

accuracy overall error rate

10+01/ 11+10+01+00

Class 1 error rate 

10/11+10

class 0 error rate (false posotive)

01/01+00

sensitivity

11/11+10

specificity

00/01+00

precision

11/11+01

FI score

2n11/2n11+n01+n10

How many groups are deciles divided into

10 groups

ex…

40 sample, groups of 4 

80 sample, gorups of 8 

decile formula 

(Total yes’s/Sample size) / (Yes’s in decile group/number in the decile group)

Cutoff rate

Any probability below cutoff rate is a no

any probability above it is a yes 

If 0 is not included in the interval

its significant

if 0 is inside the variable 

its not significant 

point estame

exaxt number

confidence interval

it is a feasible range average

prediction interval

it is an estimate

what do you do if the dependent variable is not within the range of values 

you cannot calculate because of extrapolation 

WHne using data to determine winner or loser, make sure data is inside range of a logistic regression modle

fthjfghfg

“By how much is prediction error improved … instead of using the average selling price
What variable is this askign for

R²