I need at least eleven vocabulary and eleven application questions, one extra credit. In addition, I
want you to answer the following two questions What have you learned by being in this class
and what was your favorite part.
1.What are statistics?
a. Quantitative measurements of samples
b. Qualitative measurements of samples
c. Describe sample central tendency and variability
d. Draw conclusions about a parent population from a sample
2. Central Tendency is an example of what form of statistic?
a. Inferential statistics
b. Statistical Inference
c. Descriptive statistics
d. None of the above
3. Sarah wants to see if exercising has an effect on concentration in school. What would be
an example of her null hypothesis?
a. Concentration will affect how often a student exercises.
b. Exercise will have no effect on concentration in school.
c. Concentration is correlated with concentration in school.
d. Exercise will have an effect on concentration in school.
The answer would be B as a null hypothesis states that the independent variable did not
significantly affect the dependent variable. Sarah’s null hypothesis is that exercise will not have
an effect on concentration in school.
4. Which number would not be statistically significant? The alpha level is .05.
a. 042
b. 034
c. 053
d. 04
For a value to be statistically significant it would have to be below the alpha level .05.
5. When would we reject the null hypothesis?
a. When there no difference between the treatment group and the control group
, b. The dependent variable has an effect on the independent variable
c. Differences between treatment groups do not exceed the normal variability in the
dependent variable
d. Difference between treatment groups exceed the normal variability in the dependent
variable
6. Which statement is an example of a directional hypothesis?
a. Participants who consume SSRIs will have a decrease of depressive symptoms compared
to the participants who do not.
b. Particpants who have higher stress levels will have decreased levels of
happinesscompared to participants with lower stress levels.
c. Participants who study the night before an exam will do better on the exam than those
who do not.
d. All of the above
A directional hypothesis predicts the direction of the difference between two groups on the
dependent variable. Each one of these hypotheses has a specific direction which the
hypothesis is going (decreasing and better).
7. What is a Type 1 error?
a. Rejecting the null when it is correct.
b. Accepting the null when it is correct
c. Accepting the null when it is false
d. Accepting the alternative hypothesis
8. What statement is an example of a nondirectional hypothesis?
a. High school students and college students will perform differently on memory tasks
b. Plants with sunlight will grow taller than plants without sunlight
c. College students will perform better on memory tasks than high school students
d. High school students with high parental support do academically better than high school
students with low parental support
A is the correct answer as it does not predict the direction of how the independent variable will
affect the dependent variable.
9. What is internal validity?
a. When an experiment is confounding
e. When effects on the dependent variable are due to the independent variable
want you to answer the following two questions What have you learned by being in this class
and what was your favorite part.
1.What are statistics?
a. Quantitative measurements of samples
b. Qualitative measurements of samples
c. Describe sample central tendency and variability
d. Draw conclusions about a parent population from a sample
2. Central Tendency is an example of what form of statistic?
a. Inferential statistics
b. Statistical Inference
c. Descriptive statistics
d. None of the above
3. Sarah wants to see if exercising has an effect on concentration in school. What would be
an example of her null hypothesis?
a. Concentration will affect how often a student exercises.
b. Exercise will have no effect on concentration in school.
c. Concentration is correlated with concentration in school.
d. Exercise will have an effect on concentration in school.
The answer would be B as a null hypothesis states that the independent variable did not
significantly affect the dependent variable. Sarah’s null hypothesis is that exercise will not have
an effect on concentration in school.
4. Which number would not be statistically significant? The alpha level is .05.
a. 042
b. 034
c. 053
d. 04
For a value to be statistically significant it would have to be below the alpha level .05.
5. When would we reject the null hypothesis?
a. When there no difference between the treatment group and the control group
, b. The dependent variable has an effect on the independent variable
c. Differences between treatment groups do not exceed the normal variability in the
dependent variable
d. Difference between treatment groups exceed the normal variability in the dependent
variable
6. Which statement is an example of a directional hypothesis?
a. Participants who consume SSRIs will have a decrease of depressive symptoms compared
to the participants who do not.
b. Particpants who have higher stress levels will have decreased levels of
happinesscompared to participants with lower stress levels.
c. Participants who study the night before an exam will do better on the exam than those
who do not.
d. All of the above
A directional hypothesis predicts the direction of the difference between two groups on the
dependent variable. Each one of these hypotheses has a specific direction which the
hypothesis is going (decreasing and better).
7. What is a Type 1 error?
a. Rejecting the null when it is correct.
b. Accepting the null when it is correct
c. Accepting the null when it is false
d. Accepting the alternative hypothesis
8. What statement is an example of a nondirectional hypothesis?
a. High school students and college students will perform differently on memory tasks
b. Plants with sunlight will grow taller than plants without sunlight
c. College students will perform better on memory tasks than high school students
d. High school students with high parental support do academically better than high school
students with low parental support
A is the correct answer as it does not predict the direction of how the independent variable will
affect the dependent variable.
9. What is internal validity?
a. When an experiment is confounding
e. When effects on the dependent variable are due to the independent variable
