Probability

Question 1

Experiment

Answer 1

is an act or process that leads to a
single outcome that cannot be predicted with
certainty.

Question 2

Simple Event

Answer 2

is the most basic outcome of an
experiment

Question 3

Sample Space

Answer 3

is the collection of all its simple
events

Question 4

Probability is a major concept underlying the application of inferential statistics. the probability of an event is defined by the ratio of the favorable events to the ____ events

Answer 4

Total possible

Question 5

The probability of a head when a coin is flipped is equal to 1 divided by ___

Answer 5

2

Question 6

p (A) = 1/6, then what is the probability that event A will NOT occur

Answer 6

5/6

Question 7

Multiplication rule for independent events is P(A and B) =

Answer 7

P(A) * P (B)

Question 8

The probability of an even occurring given that another event has already occurred is called the ____ probability.

Answer 8

Conditional probability

Question 9

For dependent events, the multiplication rule is P(A and B) =

Answer 9

P(A) * P(B/A)
or
P(B) * P(A/B)

Question 10

For an event to be considered independent

Answer 10

Two events must occur and have no effect on the chance of each other occurring

Question 11

The objective of a ________ is to make an inference about a population based on information contained in a sample

Answer 11

Statistic

Question 12

All individuals with a common characterisic is defined as

Answer 12

A population

Question 13

A group of individuals who form part of a population is defined as a

Answer 13

Sample

Question 14

A numerical descriptive measure of population that is calculated from observations in the population is a

Answer 14

Parameter

Question 15

a numerical descriptive measure of a sample that is calculated from observations in the sample is

Answer 15

Statistic

Question 16

Discrete variables

Answer 16

A limited set of distinct values ( whole numbers)

Question 17

Continuous variables

Answer 17

can take on any number within a defined range ( blood pressure

Question 18

Categorical variables

Answer 18

Dichotomous (binary) - Gender

Question 19

Nominal variables

Answer 19

Blood type

Question 20

Ordinal variables

Answer 20

Letter grade

Question 21

___ Statistics analyze datasets by using numerical methods to discover trends and summarize methods to discover trends and summarize/present information

Answer 21

Descriptive

Question 22

__ Statistics use sample to make estimations, predictions or generalizations about the population

Answer 22

Inferential

Question 23

Precision or reliability

Answer 23

to find a tool that leads to repeated consistent results

Question 24

Accuracy or Validity

Answer 24

To find a tool that avoids systematic error and estimates a value close to the actual value

Question 25

Test and re-test reliability

Answer 25

The agreement of measuring instruments over time for the sample

Question 26

Inter- rater reliability

Answer 26

Used to assess the degree which different rater give consistent measures of the same phenomenon

Question 27

Parallel forms of reliability

Answer 27

Used to assess the consistent results of two tests constructed in the same content domain with two parallel forms

Question 28

Content validity

Answer 28

The extent to which a measurement reflects the specific intended domain of content

Question 29

Construct validity

Answer 29

Seeks agreement between a theoretical concept and specific measuring concept