Normal Distribution
What is a normal distribution?
A symmetric, bell-shaped distribution.
What are the key components of describing a distribution?
Shapes, outlier, center, spread
Adding 10 to every value affects which measures of center?
Mean and Median
What numbers are included in the five number summary?
Minimum, Q1, Median, Q3, and Maximum
Eye color is what type of data?
What happens if too much data on the graph is positive values?
The data becomes skewed to the right.
What is a unimodal?
A graph that has one peak.
What is the range between Q1 and Q3?
The IQR.
Height measured in inches is an example of what type of data?
Quantitative data
What is bimodal?
A graph that has two peaks.
Adding a constant to every value changes everything except the…
Standard Deviation
What is the empirical rule?
The empirical rule dictates how data clusters around the mean in a perfectly normal distribution
What happens when you multiply every value by 5?
The standard deviation and the mean change everything else stays the same.
What is the IQR rule used for and what are the formulas?
The IQR rule is used for outliers.
Q1-1.5(IQR)
Q3+1.5(IQR)