BST322 Final Exam 2023 with complete solution;(100%
verified and accurate)
This is used when a conservative approach is desired and an expected cell
frequency is less than 5 in a 2X2 table.
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
False
A Z score of +/-1.96 is equivalent to these values on a normal distribution.
+/-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
True
This term refers to how data spreads out or disperses within a distribution.
Variability
A perfect negative relationship between two variables is expressed as r=0.
True or False
False
The arithmetic average of the data is called the:
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
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?
ANCOVA
Data which uses numbers to provide categories or labels as well as the ordering
of the categories are:
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
False
Chi-square tests can be conducted for a 4X3 contingency table.
True or False
True
verified and accurate)
This is used when a conservative approach is desired and an expected cell
frequency is less than 5 in a 2X2 table.
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
False
A Z score of +/-1.96 is equivalent to these values on a normal distribution.
+/-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
True
This term refers to how data spreads out or disperses within a distribution.
Variability
A perfect negative relationship between two variables is expressed as r=0.
True or False
False
The arithmetic average of the data is called the:
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
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?
ANCOVA
Data which uses numbers to provide categories or labels as well as the ordering
of the categories are:
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
False
Chi-square tests can be conducted for a 4X3 contingency table.
True or False
True
