Can You Pass This Statistics Test Quiz?

68 Questions | Total Attempts: 670

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Can You Pass This Statistics Test Quiz?

This is for statistics. It covers topics, including ANOVA, t-tests, and definitions.


Questions and Answers
  • 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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