Symbols
Definitions
Formulas
Models
Practice
100
What is this symbol?
Population Mean
100
What is statistics?
The science of collecting, analyzing, and interpreting data
100
How do you find range?
Max-Min
100
What is the shape of this distribution called?
Unimodal Distribution
100
What are the three M properties that apply to a true Normal Curve?
Mean
Median
Mode
200
What does M (With a curve) mean?
Sample Mean
200
What is a variable?
A charecteristic that can take different values
200
How to find your IQR using the 1.5 Method?
Q1-1.5IQR
Q3+1.5IQR
Q3+Q1=IQR
200
What does the line inside a box plot represent?
The Median
200
Data: 4, 6, 8, 10, 12
Find the Median
6
300
What does 0 symbol mean?
Population Standard Deviation
300
What does the acronym SOCS stand for?
S: Shape
O: Outliers
C: Center
S: Spread
300
How do you find your Z-Score
invnorm (%,0,1,Center)
300
What is shape distributioon has two peaks?
Bimodal Distribution
300
If a Box Plot has the numbers
Min-5. Q1-10. Median-15. Q3-20. Max-25
What is the IQR?
20-10=10
400
What does n represent?
Sample Size
400
What is an outlier?
A value unusually far from the rest of the data
400
How to find the standard deviation?
Sx= (Square Root)Sx2 = (Square root) E (Xi-X)2 Over n-1
400
What Interval has the greatest frequency in a Histogram?
The tallest bar
400
If you have 45% of the data lying symmetrically in the middle of your distribution, what are your Z-scores?
invnorm (0.45,0,1,CENTER)
0.5978
500
What does E symbol mean?
Summation
500
What is a percentile?
The value below which a given percentage of scores in a data set falls
500
How to find your variance?
E (Xi-X)2
Sx2= n-1
500
What is a skewed right distribution?
Tail extends to the right
500
Data: 4, 6, 8, 10, 12
Find the mean?
8