Question 1

The numbers on pool balls are examples of which scale of measurement?

Accepted Answer

A)  interval 
B)  ratio 
C)  nominal 
D)  ordinal 
A)  interval 
B)  ratio 
C)  nominal 
D)  ordinal C

Question 2

Apply the order of mathematical operations to solve for: [(13 + 7) - (10 ÷ 2)²] x 7².

Accepted Answer

A)  102.5 
B)  -102.5 
C)  -245 
D)  245 
A)  102.5 
B)  -102.5 
C)  -245 
D)  245 C

Question 3

To which scale of measurement can numbers be arbitrarily assigned but which don't have any numerical value?

Accepted Answer

A)  ordinal 
B)  ratio 
C)  nominal 
D)  interval 
A)  ordinal 
B)  ratio 
C)  nominal 
D)  interval C

Question 4

Which is the only scale of measurement which allows such statements as "Maria is twice as fast at Jose?

Accepted Answer

A)  ratio 
B)  nominal 
C)  interval 
D)  ordinal 
A)  ratio 
B)  nominal 
C)  interval 
D)  ordinal

Question 5

If two values with the same sign are to be multiplied

Accepted Answer

A)  change the sign of the first number. 
B)  change the sign of the second number. 
C)  the result will be positive. 
D)  the result will be negative. 
A)  change the sign of the first number. 
B)  change the sign of the second number. 
C)  the result will be positive. 
D)  the result will be negative.

Question 6

For the X and Y scores below, calculate the values indicated:
   a. ∑X =
b. ∑Y =
c. ∑X² =
d. ∑Y² =
e. ∑XY =
f. (∑X)( ∑Y) =
g. (∑X)² =
h. ∑X² + ∑Y² =
i. ∑X² + (∑Y)² =
j. ∑(X - 1) =
k. ∑(X - 1)² =

Accepted Answer

Summation Operator
a

Question 7

Perform the calculations indicated for the following set of X scores: 6, 3, 4, 5
a. ∑X =
b. (∑X)² =
c. ∑X² =

Accepted Answer

Calculatio

Question 8

What kind of variables can be broken down into fractions, or smaller units?

Accepted Answer

A)  extraneous variables 
B)  continuous variables 
C)  discrete variables 
D)  qualitative variables 
A)  extraneous variables 
B)  continuous variables 
C)  discrete variables 
D)  qualitative variables

Question 9

A manufacturing executive hires a researcher to study the effects of sleep deprivation on his employees. The researcher randomly selects 50 of the 1200 employees to participate in the study. The 50 employees who participated make up the

Accepted Answer

A)  parameters. 
B)  control group. 
C)  population. 
D)  sample. 
A)  parameters. 
B)  control group. 
C)  population. 
D)  sample.

Question 10

Using the correct order of operations, solve the following equations:
a. 3[5 + (8 ÷ 2)²] - 1 =
b. [6² + (24 ÷ 2 + 4²)] - 2² =
c. [(5 + 3)² x 2] - 11 + 6² =

Accepted Answer

Order of O

Question 11

Define the following terms related to experimentation.
a. Independent variable
b. Dependent variable
c. Extraneous variable
d. Random assignment

Accepted Answer

Definitions of experimental terms
a. Ind

Question 12

Apply the order of mathematical operations to solve for: 3 x (6² + 7)

Accepted Answer

A)  129 
B)  115 
C)  46 
D)  57 
A)  129 
B)  115 
C)  46 
D)  57

Question 13

Which of the following endings is NOT true: Studying statistics is important because doing so

Accepted Answer

A)  will answer all of the important questions about life. 
B)  allows me to remain abreast of new developments in my field of study. 
C)  is how we gain knowledge about people and the world around us. 
D)  enhances my critical thinking skills. 
A)  will answer all of the important questions about life. 
B)  allows me to remain abreast of new developments in my field of study. 
C)  is how we gain knowledge about people and the world around us. 
D)  enhances my critical thinking skills.

Question 14

What operation is completed last when applying the order of mathematical operations?

Accepted Answer

A)  multiplication 
B)  exponents 
C)  division 
D)  subtraction 
A)  multiplication 
B)  exponents 
C)  division 
D)  subtraction

Question 15

Real limits are a characteristic of

Accepted Answer

A)  discrete variables. 
B)  continuous variables. 
C)  qualitative variables. 
D)  independent variables. 
A)  discrete variables. 
B)  continuous variables. 
C)  qualitative variables. 
D)  independent variables.

Question 16

_____________________ statistics takes sampling error into consideration when estimating the characteristics of a population.

Accepted Answer

A)  Inferential 
B)  Descriptive 
C)  Quantitative 
D)  Qualitative 
A)  Inferential 
B)  Descriptive 
C)  Quantitative 
D)  Qualitative

Question 17

A numerical value that originates from a sample is a

Accepted Answer

A)  statistic. 
B)  parameter. 
C)  descriptive variable. 
D)  inferential variable. 
A)  statistic. 
B)  parameter. 
C)  descriptive variable. 
D)  inferential variable.

Question 18

____________ variables can have an unintended effect on the _____________ variable if not controlled.

Accepted Answer

A)  Independent; dependent 
B)  Extraneous; dependent 
C)  Extraneous; independent 
D)  Dependent; independent 
A)  Independent; dependent 
B)  Extraneous; dependent 
C)  Extraneous; independent 
D)  Dependent; independent

Question 19

Random assignment ____________________.

Accepted Answer

A)  helps eliminate bias 
B)  spreads out preexisting differences between participants among the various groups 
C)  helps maintain the integrity of the research 
D)  all of the above 
A)  helps eliminate bias 
B)  spreads out preexisting differences between participants among the various groups 
C)  helps maintain the integrity of the research 
D)  all of the above

Question 20

Population parameters are

Accepted Answer

A)  calculated directly from a population. 
B)  error free. 
C)  inferred from samples. 
D)  provide complete information about the population. 
A)  calculated directly from a population. 
B)  error free. 
C)  inferred from samples. 
D)  provide complete information about the population.

The numbers on pool balls are examples of which scale of measurement?

Apply the order of mathematical operations to solve for: [(13 + 7) - (10 ÷ 2)²] x 7².

To which scale of measurement can numbers be arbitrarily assigned but which don't have any numerical value?

Which is the only scale of measurement which allows such statements as "Maria is twice as fast at Jose?

If two values with the same sign are to be multiplied

For the X and Y scores below, calculate the values indicated: a. ∑X = b. ∑Y = c. ∑X² = d. ∑Y² = e. ∑XY = f. (∑X)( ∑Y) = g. (∑X)² = h. ∑X² + ∑Y² = i. ∑X² + (∑Y)² = j. ∑(X - 1) = k. ∑(X - 1)² =

Perform the calculations indicated for the following set of X scores: 6, 3, 4, 5 a. ∑X = b. (∑X)² = c. ∑X² =

What kind of variables can be broken down into fractions, or smaller units?

A manufacturing executive hires a researcher to study the effects of sleep deprivation on his employees. The researcher randomly selects 50 of the 1200 employees to participate in the study. The 50 employees who participated make up the

Using the correct order of operations, solve the following equations: a. 3[5 + (8 ÷ 2)²] - 1 = b. [6² + (24 ÷ 2 + 4²)] - 2² = c. [(5 + 3)² x 2] - 11 + 6² =

Define the following terms related to experimentation. a. Independent variable b. Dependent variable c. Extraneous variable d. Random assignment

Apply the order of mathematical operations to solve for: 3 x (6² + 7)

Which of the following endings is NOT true: Studying statistics is important because doing so

What operation is completed last when applying the order of mathematical operations?

Real limits are a characteristic of

_____________________ statistics takes sampling error into consideration when estimating the characteristics of a population.

A numerical value that originates from a sample is a

variables can have an unintended effect on the _ variable if not controlled.

Random assignment ____________________.

Population parameters are

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Nonparametric Statistics for Ordinal Data

Filters

Exam 1: Introduction to Statistics

The numbers on pool balls are examples of which scale of measurement?

Apply the order of mathematical operations to solve for: [(13 + 7) - (10 ÷ 2)²] x 7².

To which scale of measurement can numbers be arbitrarily assigned but which don't have any numerical value?

Which is the only scale of measurement which allows such statements as "Maria is twice as fast at Jose?

If two values with the same sign are to be multiplied

For the X and Y scores below, calculate the values indicated: a. ∑X = b. ∑Y = c. ∑X² = d. ∑Y² = e. ∑XY = f. (∑X)( ∑Y) = g. (∑X)² = h. ∑X² + ∑Y² = i. ∑X² + (∑Y)² = j. ∑(X - 1) = k. ∑(X - 1)² =

Perform the calculations indicated for the following set of X scores: 6, 3, 4, 5 a. ∑X = b. (∑X)² = c. ∑X² =

What kind of variables can be broken down into fractions, or smaller units?

A manufacturing executive hires a researcher to study the effects of sleep deprivation on his employees. The researcher randomly selects 50 of the 1200 employees to participate in the study. The 50 employees who participated make up the

Using the correct order of operations, solve the following equations: a. 3[5 + (8 ÷ 2)²] - 1 = b. [6² + (24 ÷ 2 + 4²)] - 2² = c. [(5 + 3)² x 2] - 11 + 6² =

Define the following terms related to experimentation. a. Independent variable b. Dependent variable c. Extraneous variable d. Random assignment

Apply the order of mathematical operations to solve for: 3 x (6² + 7)

Which of the following endings is NOT true: Studying statistics is important because doing so

What operation is completed last when applying the order of mathematical operations?

Real limits are a characteristic of

_____________________ statistics takes sampling error into consideration when estimating the characteristics of a population.

A numerical value that originates from a sample is a

____________ variables can have an unintended effect on the _____________ variable if not controlled.

Random assignment ____________________.

Population parameters are

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Nonparametric Statistics for Ordinal Data

Filters

variables can have an unintended effect on the _ variable if not controlled.