Statistics Final Exam 2025 – Past
Questions & Answers (Comprehensive
Review) REAL EXAM!!!
What is a single sample test that is appropriate when the standard deviation is unknown? -
ANSWER ✔---t test
Regression focuses on using the relationship between two variables for....
A. correlation
B. prediction
C. error variance or
D. sampling distribution - ANSWER ✔---B. prediction
In an experiment, the investigator systematically manipulates the ____ and observes the effects on the
____. - ANSWER ✔---independent variable; dependent variable
According to the logic of hypothesis testing, results of an experiment are evaluated by assessing.... -
ANSWER ✔---the null hypothesis
, A nonparametric test... - ANSWER ✔---depends minimally on population characteristics
A 99% confidence interval would have a(n) ____ range of values compared to a 95% confidence interval.
- ANSWER ✔---wider range
Randomly sampling one at a time replacement from a candy jar... 5 Laffy Taffy, 7 Mars Bars, and 8
Gumballs, what is the probability of obtaining a Gumball, a Laffy Taffy, and a Mars Bar in that order? -
ANSWER ✔---0.0350; to solve.... multiply the probability of each
(and = multiply; or = add)
Since a continuous variable may have an infinite number of values between adjacent units on a scale, all
measures made of a continuous variable are...
A. discrete
B. approximate
C. significant
D. nominal - ANSWER ✔---B. approximate
Correlation is a topic that focuses on the ___ and the ____ of a relationship between two variables. -
ANSWER ✔---direction and degree
If the independent variable has an effect and the experimenter retains the null hypothesis, then he/she
commits a _____ error. - ANSWER ✔---Type 2 error
With a repeated measures design analyses are performed on ____ scores. - ANSWER ✔---B.
difference scores
What type of distribution requires the following:
1. series of N trials
2. each trial there are only 2 possible outcomes
Questions & Answers (Comprehensive
Review) REAL EXAM!!!
What is a single sample test that is appropriate when the standard deviation is unknown? -
ANSWER ✔---t test
Regression focuses on using the relationship between two variables for....
A. correlation
B. prediction
C. error variance or
D. sampling distribution - ANSWER ✔---B. prediction
In an experiment, the investigator systematically manipulates the ____ and observes the effects on the
____. - ANSWER ✔---independent variable; dependent variable
According to the logic of hypothesis testing, results of an experiment are evaluated by assessing.... -
ANSWER ✔---the null hypothesis
, A nonparametric test... - ANSWER ✔---depends minimally on population characteristics
A 99% confidence interval would have a(n) ____ range of values compared to a 95% confidence interval.
- ANSWER ✔---wider range
Randomly sampling one at a time replacement from a candy jar... 5 Laffy Taffy, 7 Mars Bars, and 8
Gumballs, what is the probability of obtaining a Gumball, a Laffy Taffy, and a Mars Bar in that order? -
ANSWER ✔---0.0350; to solve.... multiply the probability of each
(and = multiply; or = add)
Since a continuous variable may have an infinite number of values between adjacent units on a scale, all
measures made of a continuous variable are...
A. discrete
B. approximate
C. significant
D. nominal - ANSWER ✔---B. approximate
Correlation is a topic that focuses on the ___ and the ____ of a relationship between two variables. -
ANSWER ✔---direction and degree
If the independent variable has an effect and the experimenter retains the null hypothesis, then he/she
commits a _____ error. - ANSWER ✔---Type 2 error
With a repeated measures design analyses are performed on ____ scores. - ANSWER ✔---B.
difference scores
What type of distribution requires the following:
1. series of N trials
2. each trial there are only 2 possible outcomes
