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
... [Show More] 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
Generally, an ANOVA test is used when 3 or more variables are compared.
True or False - False
In a negative relationship, as the score of one variable decreases, the score on the second variable decreases.
True or False - False
This is the measurement of dispersion equal to the square root of the mathematical variance. - Standard deviation
A formal statement that there is an absence of relationship between variables when tested by a researcher is called: - Null Hypothesis
The area of the theoretical distribution where the researcher will reject the null hypothesis is called: - Critical region
Bivariate statistics refers to the statistical analysis of the relationship between two variables.
True or False - True
The difference between the highest and lowest score in a distribution is called: - Range
A significant finding with the 2 sample t-test indicates a strong relationship exists between the 2 population means.
True or False - False
Relevant data that are expressed in numerical form are called: - Quantitative data
An assumption used by statisticians which states that population parameters are normally distributed: - Central Limit Theorem
Data which uses number values with an equal distance between values are: - Interval
Not all variables retained in a regression model are required to be significant.
True or False - True
In a study that examines the effect of a peer mentor on the heart rate of patients, what is the dependent variable? - Heart rate
Positive relationships between two variables indicate that, as the score of one increases, the score of the other increases.
True or False - True
Data which uses number values, has an equal distance between values, and has a possible absolute zero is: - Ratio [Show Less]