Types Of Variables
This qualitative variable is used to distinguish between groups.
What does the mean of a statistic tell you about a set of data?
What is the average value of a data set?
According to the empirical rule, what percentage of data on a normal distribution is within one standard deviation (σ)?
What is roughly 68% of the normal distribution curve?
What is the equation of the linear regression model of a graph?
What is y=a+bx?
What is the entire set of a group with a set condition that is not feasible to collect data called?
What is a population?
This variable is numerical and can be measured.
What is a quantitative variable?
What does the pth percentile value on a bell curve represent?
What is every value equal to or less than the pth percentile?
According to the empirical rule, what percentage of data on a normal distribution is within two standard deviations (σ)?
What is roughly 95% of the normal distribution curve?
What variable does x represent in the linear regression model?
What is the explanatory or independent variable of the data?
What is the smaller group within a population which can be measured?
What is a sample?
This type of quantitative value is countable and finite.
What is a discrete quantitative variable?
What is the equation of the Interquartile Range (IQR)?
What is IQR=Q3-Q1?
According to the empirical rule, what percentage of data on a normal distribution is within three standard deviations (σ)?
What is roughly 99.7% of the normal distribution curve?
What does the y variable of the linear regression model represent?
What is the predicted value of the response variable according to the linear regression model?
What is an experiment?
What is, two treatments are assigned to a sample and it can be used to determine causality?
This type of quantitative variable is measurable and has an infinite possibility of values.
What is a continuous quantitative variable?
What are the equations for determining an outlier?
What is Q1-1.5(IQR) and Q3+1.5(IQR)?
According to the empirical rule, what percentage of data on a normal distribution is within four standard deviations (σ)?
What is roughly 99.99% of the normal distribution curve?
What is the equation for a residual on a graph?
What is the actual value-predicted value?
What is an observational study?
What is, it has no treatments assigned and can't be used to determine causality?
Is the number of a zip code considered a quantitative variable or a categorical variable?
What is a categorical variable?
What is the square of the standard deviation (s) called?
What is the variance?
What are some real world applications that can be measured by a normal distribution?
What is height, weight, blood pressure, IQ score, SAT/ACT score, and variations of measured objects?
What is the point of the least squares linear regression model?
What is, it minimizes the sum of the squares of residuals and it passes through the average values of x and y?
What group can the results of an experiment or observational study be generalized to?
What is, it can be generalized to the population that the sample was derived from?