BST322 Final UPDATED Exam Questions and CORRECT Answers
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Course
BST322
Institution
BST322
BST322 Final UPDATED Exam Questions
and CORRECT Answers
This is used when a conservative approach is desired and an expected cell frequency is less
than 5 in a 2X2 table. - CORRECT ANSWER- Fisher's exact test
It is important to assess the magnitude or strength of a relationship because this a...
BST322 Final UPDATED Exam Questions
and CORRECT Answers
This is used when a conservative approach is desired and an expected cell frequency is less
than 5 in a 2X2 table. - CORRECT ANSWER- Fisher's exact test
It is important to assess the magnitude or strength of a relationship because this assists you
with deciding whether or not a variable A causes variable B.
True or False - CORRECT ANSWER- False
A Z score of +/-1.96 is equivalent to these values on a normal distribution. - CORRECT
ANSWER- +/-2 standard deviations
When examining the relationship between two interval or ration level variables, you can use a
scatterplot to allow you to visualize the relationship between the two.
True or False - CORRECT ANSWER- True
This term refers to how data spreads out or disperses within a distribution. - CORRECT
ANSWER- Variability
A perfect negative relationship between two variables is expressed as r=0.
True or False - CORRECT ANSWER- False
The arithmetic average of the data is called the: - CORRECT ANSWER- Mean
Public Health nurses want to compare the mean weight of US 6th graders to a sample of 6th
graders in one school. Which statistical test is most appropriate - CORRECT ANSWER- One
sample t-test
Psych nurses wanted to evaluate the effect of three different treatments for anxiety - positive
imagery, therapeutic touch, and medication on anxiety score (interval data) while controlling
for the effect of length of stay. Which test is most appropriate? - CORRECT ANSWER-
ANCOVA
, Data which uses numbers to provide categories or labels as well as the ordering of the
categories are: - CORRECT ANSWER- Ordinal
When examining the relationship between a nominal variable and an interval or ratio
variable, you would create a table using the nominal variables, calculate the mode and
median of the interval or ratio variable, then make a decision regarding the relationship using
the mode and median.
True or False - CORRECT ANSWER- False
Chi-square tests can be conducted for a 4X3 contingency table.
True or False - CORRECT ANSWER- True
Generally, an ANOVA test is used when 3 or more variables are compared.
True or False - CORRECT ANSWER- False
In a negative relationship, as the score of one variable decreases, the score on the second
variable decreases.
True or False - CORRECT ANSWER- False
This is the measurement of dispersion equal to the square root of the mathematical variance. -
CORRECT ANSWER- Standard deviation
A formal statement that there is an absence of relationship between variables when tested by
a researcher is called: - CORRECT ANSWER- Null Hypothesis
The area of the theoretical distribution where the researcher will reject the null hypothesis is
called: - CORRECT ANSWER- Critical region
Bivariate statistics refers to the statistical analysis of the relationship between two variables.
True or False - CORRECT ANSWER- True
The difference between the highest and lowest score in a distribution is called: - CORRECT
ANSWER- Range
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