# Can You Pass This Statistics Test Quiz?

68 Questions | Total Attempts: 670  Settings  This is for statistics. It covers topics, including ANOVA, t-tests, and definitions.

• 1.
A dichotomous variable should be labeled as ____________ for quantitative data analysis.
• A.

Nominal

• B.

Ordinal

• C.

Interval

• D.

Ratio

• 2.
If a variable is measured in equal intervals and has a true zero, it should be labeled as ____________ for quantitative data analysis.
• A.

Nominal

• B.

Ordinal

• C.

Interval

• D.

Ratio

• 3.
If a researcher selects every 10th person, for a total of 100 subjects, from a list of 1,000 available subjects, the investigator has performed ________________ sampling.
• A.

Random

• B.

Stratified

• C.

Systematic

• D.

Cluster

• 4.
The equation (standard deviation/mean) is called the standard error of the mean and is used in the calculation of a 95% confidence interval.
• A.

True

• B.

False

• 5.
A stem and leaf diagram is very useful when data is measured on an ordinal scale.
• A.

True

• B.

False

• 6.
The JMP software package uses the t-distribution to calculate confidence intervals rather than the z-distribution when the sample size is small.
• A.

True

• B.

False

• 7.
6. A Shapiro-Wilk test that has a p-value of 0.03 would indicate that the variable of interest is not normally distributed.
• A.

True

• B.

False

• 8.
A distribution that is severely skewed to the right will have a mean that is larger than the median
• A.

True

• B.

False

• 9.
As the sample size goes up and the variance goes down, the 95% confidence interval becomes tighter (smaller).
• A.

True

• B.

False

• 10.
Each of the following statistical tests have an assumption of independence: Independent t-Test, Paired t-Test, Completely Random (CRD) ANOVA.
• A.

True

• B.

False

• 11.
Dr. John is conducting a study to predict the probability of being male or female (Y) based on the number of sarcomeres identified from a muscles biopsy (X). Dr. John should us e a Chi-square analysis for this investigation.
• A.

True

• B.

False

• 12.
To increase statistical power, you should decrease your alpha and increase your sample size.
• A.

True

• B.

False

• 13.
Power is related to all of the following except one, which one is it?
• A.

Variance

• B.

Alpha level

• C.

Sample Size

• D.

Effect Size

• E.

SEM

• 14.
In which part of the research paper should you talk about your limitations and weaknesses?
• A.

Introduction

• B.

Abstract

• C.

Discussion

• D.

Methods

• 15.
When performing a statistical analysis, if your sample size is larger than 30, what can you use to defend your data?
• A.

Bonferroni Correction

• B.

Central Limit Theorem

• C.

Beta

• D.

Type II error

• 16.
ICC is used to measure _________; PPMCC is used to measure ___________.
• A.

Correlation, Agreement

• B.

Agreement, Power

• C.

Agreement, Correlation

• D.

Correlation, Power

• 17.
What is the null hypothesis?
• A.

The hypothesis that there is a difference.

• B.

The hypothesis that there is no change.

• 18.
We will be confident a true difference exits when:
• A.

We have a large error and a larger treatment effect

• B.

We have a small error and small treatment effect

• C.

We have a large treatment effect and small error

• 19.
Which of the following is not true about a confidence interval?
• A.

As SEM decreases, the CI decreases

• B.

It is an interval Estimate

• C.

The bigger the N, the wider the CI

• D.

The larger the alpha level, the wider the CI

• E.

The smaller the n, The wider the CI

• 20.
If we have a small sample size, which distribution should we use?
• A.

T

• B.

Z

• C.

F

• D.

P

• 21.
_____ + s/ square root of n x 100
• A.

Coefficeient of variance

• B.

Confidence Interval

• C.

SEM

• D.

Variance

• 22.
Which of the following statements is true?
• A.

Standard deviation is the variance squared.

• B.

Variance is standard deviation squared.

• C.

We are most interested in the variance.

• 23.
Grading a MMT is an example of which type of scale:
• A.

Ordinal

• B.

Nominal

• C.

Interval

• D.

Ratio

• 24.
Which of the following is not a parametric assumption?
• A.

Normality

• B.

Equal variance

• C.

Independence

• D.

Random Assignment

• E.

Unequal varaince

• 25.
Mean, Mode, and median are all measures of central tendency and when a distribution is skewed, we should use the median.
• A.

True

• B.

False

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