Inferential Statistics

Question 0

There is something going on

Answer 0

Alternative

Question 1

There is nothing going on

Answer 1

Null

Question 2

2 competing claims are independent

Answer 2

Null

Question 3

2 competing claims are dependent

Answer 3

Alternative

Question 4

Can we “accept the null hypothesis”?

Answer 4

No

Question 5

Can we “fail to reject the null hypothesis”?

Answer 5

Yes

Question 6

What is unusual? Null or alternative?

Answer 6

Alternative

Question 7

The null hypothesis represents the

Answer 7

Status quo

Question 8

Alternative hypothesis represents our

Answer 8

Research question

Question 9

If two variables data happen DUE TO CHANCE, they are

Answer 9

Independent

Question 10

If two variables change DUE TO AN ACTUAL EFFECT ON ONE, this is

Answer 10

Dependent

Question 11

Probability of observing an outcome at least as extreme as the one observed in the original data is the

Answer 11

P-value

Question 12

If the p value is low, the N o should _______ in favor of the alternative

Answer 12

Go

Question 13

What are the four N of null?

Answer 13

Nothing new
Nothing different
Nothing changed
Negation of the research question

Question 14

If the Null is true, then

Answer 14

Test it

Question 15

If the null is rejected

Answer 15

Consider alternative

Question 16

Alternative is known as ACU

Answer 16

Assumption
Claim
Unknown

Question 17

What is the SAG of null

Answer 17

Status quo
Assumption
Given

Question 18

Ho is always ______________ Ha

Answer 18

In opposition

Question 19

Which one contains equality?

Answer 19

Ho / Null

Question 20

Which one does not contain equality?

Answer 20

Ha / alternative

Question 21

What are three possibilities in Ho and Ha

Answer 21

Ho = Ho _

Ha # Ha > Ha <

Question 22

We can ___________ or _____________ the null hypothesis or Ho.

Answer 22

Reject ; fail to reject

Question 23

If we reject the Ho, it means that the

Answer 23

Ha is supported by data

Question 24

If we fail to reject the the Ho, it follows that the Ho is "true". True or false?

Answer 24

False

Question 25

If we fail to reject Ho, Ho _____________ as true.

Answer 25

Does not follow

Question 26

Words to avoid TCP

Answer 26

Truth Certain Prove

Question 27

Words to Prefer

Answer 27

Indicate Support Infer

Question 28

In a random process, we know ____________________, but we don't know ____________________.

Answer 28

What outcomes could happen; which particular outcome will happen

Question 29

Examples of random process

Answer 29

Coin toss Die roll Ipod shuffle Stock market

Question 30

probability of event A is

Answer 30

P (A)

Question 31

Probability value should be

Answer 31

Less than 1 greater than 0

Question 32

If we observed the random process an infinite number of times, the probability of an outcome is

Answer 32

The proportion of times the outcome would occur

Question 33

Probability is a subjective degree of belief

Answer 33

Bayesian interpretation

Question 34

The Bayesian interpretation is largely popularized by

Answer 34

Revolutionary advance in computational technology and methods during the last twenty years

Question 35

As more observations are collected, the proportion of occurrences with a particular outcome converges to the probability of that outcome

Answer 35

Law of large numbers

Question 36

Common misunderstanding of law of large numbers

Answer 36

Gamblers fallacy (law of averages)..there is no memory

Question 37

Synonym for disjoint events

Answer 37

Mutually exclusive

Question 38

Disjoint events

Answer 38

Cannot happen at the same time

Question 39

Example of disjoint events

Answer 39

Single toss coin Subject pass or fail Single card from a deck

Question 40

Events that can happen at the same time

Answer 40

Non-disjoint

Question 41

The outcome of a single toss coin is

Answer 41

Disjoint outcomes

Question 42

Grade A in stat and eco

Answer 42

Non disjoint

Question 43

Formula for disjoint probability

Answer 43

P(A and B) = 0

Question 44

Formula for non-disjoint probability

Answer 44

P(A and B) not equal to 0

Question 45

If knowing the outcome of one provides no useful information about the other's outcome

Answer 45

Independence

Question 46

P (A|B) = P(A), then A and B are ________________.

Answer 46

Independent

Question 47

If A and B are independent, P(A and B) = P(A) x (B).apply. Two tails in a row

Answer 47

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