Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
4 Cards in this Set
 Front
 Back
Pth percentile 
the value with P percent of the observations less than it. 

cumulative relative frequency rate 
Plot a point corresponding to the cumulative relative frequency in each class at the smallest value of the next class. 

Standardizing

converting observations from original values to standard deviation units. To standardize a value, subtract the mean of the distribution and then divide by the standard deviation.


Standardized Value (zscore) 
If x is an observation from a distribution hat has known mean and standard deviation the standardized value of X is. z=x mean divided by standard deviation tells us how many standard deviations from the mean an observation falls and in what dirrection. 