CLASS 18 - thinking in averages (quant)

Question 1

who said “what counts cannot be counted”

Answer 1

einstein

Question 2

who said “let me count the ways”

Answer 2

Elizibeth Browning

Question 3

variable

Answer 3

quantitative variable: wieght or height

categorical variable: (qualitative): major or obese

Question 4

operational definition

Answer 4

how are you gunna measure the variables?

Question 5

what does 0 correlation mean

Answer 5

no relationship

Question 6

variance and standard deviation

Answer 6

s = dispersion measuring average distance of scores from the mean

s^2 is variance

Question 7

positive correlation

Answer 7

height and weight

when one goes up so does the other

Question 8

negaive correlation

Answer 8

stress increases, happieness dercreases

one goes up the other goes down

Question 9

inferential statisitics

Answer 9

conclusions about a population based on data from a sample

Question 10

statistically significant effect

Answer 10

less than 5% chance of happening is statistically significant

Question 11

type 1 error
type 2 error

Answer 11

type 1 error = false positive (rejects H1 when it was true)
type 2 error = false negative (accepts H1 when it was false)