Normality
Normality is a property of a random variable that's distributed according to the normal distribution.
Power house of the cell
Mitochondria
Definition of "gist"
The main point or essence
Years of World War 2
1939-1945
It is bell-shaped and symmetric.
What are the characteristics of normal distribution?
Do you check a dataset before or after performing an analysis?
It's important to remember to check a data set for normality before performing an analysis that relies on normally distributed data.
206
Shakespeare 1595
Romeo and Juliet
Anne Franks hiding place
Secret annex in Amsterdam
A measure of how peaked a distribution is.
What is Kurtosis?
How do you test for normality?
There are two ways to test for normality which are graphical and statistical methods. Graphic methods include the histogram and normality plot and statistically two numerical measures of shape, skewness and excess kurtosis can test for normality.
Essential gas so we can breathe
Oxygen
Indicates action or state of being or condition.
How many stars on American flag
50 stars
A measure of whether the set is symmetric or skewed.
What is skewness?
Example of a test that was designed specifically to test normality
The normal probability plot was designed specifically to test for the assumption of normality. If your data comes from a normal distribution, the points on the graph will form a line.
Largest planet in the solar system
Jupiter
Example of pronoun
Me, she, he, herself, you, I
How many chests of tea were thrown in the Boston Tea Party
342
99.7% of observations fall within three standard deviations from the mean in both directions.
What is the percentage within three standard deviations from the mean in both directions?
Skewness normality test ranges
Skewness less than -1 or greater than 1, distribution is highly skewed. If skewness is between -1 and -0.5 or 0.5 and 1, distribution is moderately skewed. If skewness is between -0.5 and 0.5, distribution is symmetric.
Rarest blood type
AB negative
First lecturer and later professor of English studies
Auguste Angellier
First capital of the U.S
New York City
1.00 or 100%
What is the area under the normal curve equal to?