Coming up With a Plan
A part of the population that is studied to collect data
What is a sample?
A variable that can be measured or counted, and expressed as a number.
What is a quantitative variable?
The name of the variable that describes the strength of a scatterplot relationship
What is r (the correlation coefficient)?
This describes the linear change in the y-variable every time x increases by 1
What is the slope?
The type of variable used in two-way tables
What is categorical?
This is the variable being modified in a study
What is the explanatory variable?
A data point that is unusually high or low for that set of data.
What is an outlier?
A prediction for a value outside the range of available data
What is extrapolation?
The equation for the linear line of best fit.
What is y = a + bx
A probability calculated using a column or rows total and the grand total.
What is a marginal probability?
These studies involve gathering information without doing anything to change a participant.
What are observational studies?
The three key terms for describing a distribution.
What are Center, Spread, and Shape?
The three key terms for describing a scatterplot.
What are Strength, Direction, Form?
The equation for an exponential line of best fit
A probability that is calculated using a certain subgroup of the grand total. (Usually involves a 'given')
What is a Conditional Probability?
This type of bias results from leading questions
What is Response bias?
A proportion of data values found by dividing the number of values in a bin by the total sample size
What is relative frequency?
The best way to determine a scatterplot's form.
What is by looking at the graph?
When given a residual chart, this shows a problem with the form used.
What is a Pattern?
What is a Joint Probability?
When one or more participants in a study does not know what treatment they are getting.
What is blinding?
This is the formula for the range of the middle 50%
What is IQR = Q3-Q1
We want to minimize these to find the line of best fit.
What are the squared residuals?
This is the formula to find the rate of growth or decay
What is b-1?
John's test result that says he loves dogs, when he really does not like dogs at all
What is a False Positive?