Symbols/Notation

Question 1

What symbol is this? x̄

Answer 1

X-bar

Question 2

What does this symbol mean? x̄

Answer 2

Sample mean

Question 3

What does this symbol mean? N

Answer 3

Population size

Question 4

What does this symbol mean? n

Answer 4

Sample size

Question 5

What does this symbol mean? s

Answer 5

Sample standard deviation

Question 6

What does this symbol mean? ∑

Answer 6

Summation

Question 7

What symbol is this? ∑

Answer 7

Sigma

Question 8

What is this symbol? σ

Answer 8

Sigma

Question 9

What does this symbol mean? σ²

Answer 9

Population Variance

Question 10

What does this symbol mean? s²

Answer 10

Sample Variance

Question 11

What is this symbol? µ

Answer 11

Mu

Question 12

What does this symbol mean? µ

Answer 12

Population mean

Question 13

What does this symbol mean? σ

Answer 13

Population Standard Deviation

Question 14

What does this symbol mean? r

Answer 14

Sample correlation coefficient

Question 15

What does this symbol mean? r² or R²

Answer 15

Coefficient of determination

Question 16

What does this symbol mean? ρ (rho)

Answer 16

Population correlation coefficient

Question 17

What does this symbol mean? ŷ

Answer 17

Prediction of y

Question 18

What does this symbol mean? b1

Answer 18

Slope of regression line

Question 19

What does this symbol mean? b0

Answer 19

Y-intercept of regression line

Question 20

What is this symbol? ≠

Answer 20

Not equal to

Question 21

What is this symbol < ?

Answer 21

Less than, is less than

Question 22

What is this symbol > ?

Answer 22

Greater than, is more than, is greater than

Question 23

What is this symbol ≤ ?

Answer 23

Less than or equal to, no more than, no greater than

Question 24

What is this symbol ≥ ?

Answer 24

Greater than or equal to, is at least, no less than

Question 25

What is the binomial notation?

Answer 25

X~bin(n,p)
n= # or trials
p= probability of success in a single trial that remains constant

Question 26

What does this symbol mean? n

Answer 26

The number of times a trial is repeated

Question 27

What does this mean? p= P(S)

Answer 27

The probability of success in a single trial

Question 28

What does this mean? q= P(F)

Answer 28

The probability of failure in a single trial (q= 1-p)

Question 29

What is the Normal Distribution notation?

Answer 29

X~N (µ,σ)

Question 30

What is the Standard Normal Distribution notation?

Answer 30

Z~N (0,1)