probability distribution

Question 1

1st moment and second moment tell us

Answer 1

distribution

Question 2

1st moment is

Answer 2

mean

Question 3

2nd moment is

Answer 3

mean and variability (standard deviation and variance)

Question 4

random variables

Answer 4

help map out random processesra

Question 5

random variables can either be

Answer 5

discrete or continuous

Question 6

random variables take on numerical values according to

Answer 6

chance process

Question 7

difference between discrete random variable and continuous

Answer 7

how it is computed

Question 8

discrete random variable

Answer 8

can take on countable numbe rof posible values

Question 9

continuous random variables

Answer 9

take on all values in the intervals (not countable)

Question 10

probability dist function provides what

Answer 10

probability that random value assumes particular value

Question 11

does probability density function directly provide probabilities

Answer 11

no

Question 12

area under graph corresponding to given interval provides probability about what

Answer 12

that continuous random variable assumes value in that interval

Question 13

CDF of x is denoted as

Answer 13

F(a)

Question 14

uniform dist

Answer 14

all outcomes are equally likely

Question 15

properties of normal distribution

Answer 15

1) skewness
2) all normal distribution differentiation by 2 parameters
3) area under curve
4) % of values or 1,2,3 standard deviations away from mean