Normal distributions
The shape of a normal distribution
The mean of 6,7,5,7,5
What is 6?
A measure of the avergae distance from the mean
What is standard deviation?
The predicted (y-context) when x = 0 context is the (____).
What is the y-intercept?
A student interviews 32 classmates, asking how they get to school every morning. Name the type of variable.
What is categorical?
What the acronym CSOCS stands for
What is Context, Shape, Outliers, Center, Spread?
The median of 6,7,5,7,9
What is 7?
The strength and direction of a linear relationship
What is correlation?
The (context) typically varies by (___) from the mean of (mean).
Standard Deviation
Correlation _____ Causation
What is "does not prove"?
The two methods of finding outliers
What are 1.5IQR and 2SD methods?
The shape of 4,4,5,5,6,6,7,7
What is uniform?
The error between what the LSRL predicts the y value will be for a given x and the actual y value
What is a residual?
For every additional 1(x-variable unit), the (y-variable) increases/decreases by (__
___)(y-variable unit), on average
What is slope?
(observed-expected)/standard deviation
What is z-score?
The mean of a standardized normal distribution
What is 0?
The shape of 2,3,4,5,6,6,7,7,7,8,8,8,9,9
What is skewed left?
When the effect of multiple explanatory variables on a response variable cannot be separated
What is a Confounding variable?
The actual (y-context) was (____) above/below the predicted value when (x-context = #).
What is a Residual
Correlation coeffcient of 0.87
What is a strong, positive correlation?
The % of data within 3 standard deviations from the mean
What is 99.7%?
The IQR of 4,5,6,6,7,7,8,8,9,11
What is 2?
response variable= a+b(explanatory variable)
What is LSRL(Least-Squares Regression Line)?
(Specific value with context) is (___) standard deviations above/below the mean.
What is a z-score?
A bar graph is used for _____ quantitative data
What is discrete?