which graphic representation could a researcher use to help determine if a continuous variable followed a normal distribution

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

1. Which graphic representation could a researcher use to help determine if a continuous variable followed a normal distribution?

a.       Bar chart

b.      Pie chart

c.       Box and Whisker Plot

d.      Histogram and Box plot

 

2. Which graphic representation are appropriate when we wish to illustrate complex relationships among variables that cannot be shown with tables or text, or to show trends or geographic variations?

a.       Bubble maps

b.      Charts

c.       Stem plots

d.      Figures

3. A Column spanner in a table should describe which of the following?

a.       The independent variable

b.      The dependent variable

c.       The covariate variable

d.      The grouping variable

4. Which graph would be most useful in determining the change in two variables over time?

a.       A line chart

b.      A histogram

c.       A bar chart

d.      A flow chart 

5. Which type of statistical information or graph would be most helpful in determining whether the baseline characteristics of a study group are well balanced?

a.       A bar chart

b.      A box-whisker plot

c.       Descriptive statistic

d.      A flow chart 

True/False

6. True or False? Using a 95% confidence interval to describe an odds ratio allows other researchers to determine if the results were statistically significant because a statistically significant odds ratio confidence interval will include the number 1. 

7. True or False? The r2 value and a least squares regression line can be an excellent way to demonstrate the degree of correlation between two variables, and the type of association between the two variables.

8. True or False? Box-whisker plots are useful tools in comparing the median and the distribution of two or more variables broken down into different categories. 

9. True or False? Variable names and units of measurement should not be specified clearly and accurately. 

 

10. True or False? Good tables have clear and concise titles.1. Which graphic representation could a researcher use to help determine if a continuous variable followed a normal distribution?

a.       Bar chart

b.      Pie chart

c.       Box and Whisker Plot

d.      Histogram and Box plot

 

2. Which graphic representation are appropriate when we wish to illustrate complex relationships among variables that cannot be shown with tables or text, or to show trends or geographic variations?

a.       Bubble maps

b.      Charts

c.       Stem plots

d.      Figures

 

3. A Column spanner in a table should describe which of the following?

a.       The independent variable

b.      The dependent variable

c.       The covariate variable

d.      The grouping variable

 

4. Which graph would be most useful in determining the change in two variables over time?

a.       A line chart

b.      A histogram

c.       A bar chart

d.      A flow chart

 

5. Which type of statistical information or graph would be most helpful in determining whether the baseline characteristics of a study group are well balanced?

a.       A bar chart

b.      A box-whisker plot

c.       Descriptive statistic

d.      A flow chart

 

True/False

 

6. True or False? Using a 95% confidence interval to describe an odds ratio allows other researchers to determine if the results were statistically significant because a statistically significant odds ratio confidence interval will include the number 1.

 

7. True or False? The r2 value and a least squares regression line can be an excellent way to demonstrate the degree of correlation between two variables, and the type of association between the two variables.

 

8. True or False? Box-whisker plots are useful tools in comparing the median and the distribution of two or more variables broken down into different categories.

 

9. True or False? Variable names and units of measurement should not be specified clearly and accurately.

 

10. True or False? Good tables have clear and concise titles.

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