Vocabulary
Part of a population used for an experiment or study
sample
What does S stand for in SOCV + context?
Shape
What happens to center and variability when the values are doubled in a sample?
They are doubled too
The equation for IQR
Q3 - Q1
What does the area represent in density curves?
Proportion of values
a measure of how many standard deviations a data point is from the mean of a distribution
z-score
What does C stand for in SOCV + context?
center (mean, median)
Is the mean greater than, less than, or equal to the median when the distribution graph is skewed right?
greater than
What does Q1 represent?
The 25th percentile
What is the shape of the density curve when the mean and median are equal?
Roughly symmetric
What is 68-95-99.7?
Empirical Rule
What does O stand for in SOCV + context?
Outliers
What happens to shape when the values are added by a constant (ex. added by 6) in a sample?
It stays the same.
What does Q3 represent?
the 75th percentile
What would the value of Table A be for a z score of -2.39?
0.00842
The value that has x% of the data less than or equal to it.
Percentile
What does V stand for in SOCV + context?
Variability
What is mean or median affected the outliers more?
mean
What does the median represent?
The 50th percentile
What would the value of Table A be for a z score of 1.46?
0.92785
(value - mean)/Standard deviation is the equation for what?
Z score
What does IQR stand for?
Interquartile Range
What is the total area in density curves?
1
What is the calculator function to find proportion?
normalcdf
What would the value of Table A be for a z score of -0.62?
0.26763