Finals

Question 1

denoted by Ha, is the competing claim.

Answer 1

Alternative hypothesis

Question 2

analyze samplings to make predictions about larger populations.

Answer 2

inferential

Question 3

is a range of values that is likely to contain the true value of the parameter. It is associated with the degree of confidence.

Answer 3

interval estimate

Question 4

is a statistical tool used for testing hypothesis when the population standard deviation is known and the sample size is at least 30.

Answer 4

Z-Test

Question 5

is defined as tentative explanation for a group of facts, phenomenon or scientific problem that can be accepted as basis for further verification or accepted as likely to be true.

Answer 5

Hypothesis

Question 6

the most widely used correlation statistic to measure the degree of the relationship between linearly related variables.

Answer 6

The Pearson’s Correlation Coefficient

Question 7

r, can take a range of values from +1 to -1.

Answer 7

Pearson correlation coefficient,

Question 8

is the probability that the population parameter is within the confidence interval, usually expressed in percentage value.

Answer 8

level of confidence

Question 9

is a statistical process used to determine whether there exists a relationship between two or more variables.

Answer 9

Correlation

Question 10

a number calculated from given data that measures the strength of the linear relationship between two variables: x and y.

Answer 10

linear correlation coefficient

Question 11

states that the sampling distribution of a statistic will be nearly normal if the sample size is large enough.

Answer 11

central limit theorem

Question 12

occurs when the null hypothesis is not rejected when in fact it is false.

Answer 12

type II error

Question 13

used to predict the value of a variable based on the value of another variable.

Answer 13

Linear regression

Question 14

a relationship between two variables, x and y, in which the change in value of one variable is exactly proportional to the change in value of the other.

Answer 14

perfect correlation

Question 15

A value of 0 indicates that there is no association between the two variables.

Answer 15

no correlation

Question 16

a relationship between two variables that move in tandem—that is, in the same direction.

Answer 16

positive correlation

Question 17

considers a conclusion that is drawn stating that the null hypothesis is false when in fact it is true.

Answer 17

type I error

Question 18

a range around a measurement that conveys how precise the measurement is.

Answer 18

confidence interval

Question 19

used to explain the relationship between an independent and dependent variable.

Answer 19

Coefficient of Determination

Question 20

between -1 and 1

Answer 20

value of r