Biostatistics Prt 2

55 Questions | Total Attempts: 762

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Biostatistics Prt 2

Prt 2


Questions and Answers
  • 1. 
    Making a frequency table we first click _________  under "insert"; First field is what data we wish to____; 2nd field _______ the table
  • 2. 
    ________ is a characteristic that differs from one individual to the next . it may be numerical (such as blood pressure ) or it can be categorical (whether or not someone attends church regularly)
    • A. 

      Data

    • B. 

      Varaible

    • C. 

      Sample

    • D. 

      Poll

  • 3. 
    ____ is a variable that is not the main concern of the study but may be partially responsible for the observed results.
    • A. 

      Confounding varaible

    • B. 

      Sample variable

    • C. 

      Treatment

  • 4. 
    __________ is a study in which treatments are randomly assigned to particpants
    • A. 

      Placebo

    • B. 

      Non response bias

    • C. 

      Nonparticapant bias

    • D. 

      Randomized experiment

  • 5. 
    Cause-and-efffect conclusions can generally be made on the basis of _________
    • A. 

      Treatment

    • B. 

      Randomized experiments

    • C. 

      Placebo

    • D. 

      Statistically significant

  • 6. 
    _____ is specific regimen or procedure assigned to participants by the experimenter
    • A. 

      Treatment

    • B. 

      Data

    • C. 

      Placebo

    • D. 

      Sample

  • 7. 
    ________ is one in which each participant has specified probability if being assigned to reach treatment
    • A. 

      Randomized experiment

    • B. 

      Random assignment

    • C. 

      Random sample

    • D. 

      Random variable

  • 8. 
    _____ is a pill or treatment designed to look just like the active treatment but with no active ingredients.
  • 9. 
    _________ relationship or difference is one that us large enough to be unlikely to have occurred in the sample if there was no relationship or difference in the population. 
    • A. 

      Statistically significant

    • B. 

      Placebo

    • C. 

      Fasle positive

    • D. 

      Data snooping

  • 10. 
    ______________ in statsictics refers to the fact that reserachers often test many different hypotheses in the same study
    • A. 

      Multiple testing

    • B. 

      Multiple hypthosis

    • C. 

      Multiple comparisions

    • D. 

      Multiple varaibles

  • 11. 
    This practive may result in statsically significant findings by mistake ___________ results
  • 12. 
    Is called________ because researchers snoop around in their data unil they find something interesting to report
  • 13. 
    When you read about the change in rate or risk occurrence of something make sure you also find out the _______ rate and _______risk.
  • 14. 
    Quantitative Variables      
    • A. 

      Histogram

    • B. 

      Dotplots

    • C. 

      Boxplot

    • D. 

      Pie graph

    • E. 

      Bar Graph

    • F. 

      Stem-and-Leaf Plots

    • G. 

      Scatter plot

  • 15. 
    Multivaraible for quantitative varaibles
    • A. 

      Histograph

    • B. 

      Scatterplot

    • C. 

      Steam and leaf plot

    • D. 

      Bar chart

  • 16. 
    A X Y plot can also be called a 
  • 17. 
    ____similar to bar graphs, used for any number of data values.
    • A. 

      Histogram

    • B. 

      Boxplot

    • C. 

      Xy

    • D. 

      Steam and leaf

  • 18. 
    ________ and ______ present all individual values, useful for small to moderate sized data sets.
    • A. 

      Stem-and-leaf plots and dotplots

    • B. 

      Histogram and box plot

    • C. 

      Steamd- and-leaf plots and box plots

    • D. 

      Bar graph and histographs

  • 19. 
    _____useful summary for comparing two  or more groups
    • A. 

      Histogram

    • B. 

      Bar chart

    • C. 

      Steam-and-leaft

    • D. 

      Box plot

  • 20. 
    Box-and-whisker plot also refers to____
  • 21. 
    Histograms are push together and portray the distrubution of variable
    • A. 

      True

    • B. 

      False

  • 22. 
    ____ is the simplest to plot quantitive varibles
  • 23. 
    Steam-and-leaf represent...
    • A. 

      Shape

    • B. 

      Centeral tendancy or center

    • C. 

      Spread

    • D. 

      Orginal data values

  • 24. 
    Disadvantage of steam-and-leaf
    • A. 

      Unattractive

    • B. 

      Key provided

    • C. 

      Picture made of number

    • D. 

      Decimal place

    • E. 

      Recovers data values, puls rate for everyone in data set

  • 25. 
    Quantiative values should have in analysis
    • A. 

      Center

    • B. 

      Amount of variation or spread

    • C. 

      General shape of distribution

    • D. 

      Any extreme values

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