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FREQUENCY
Displays
Central Tendency
Spread
2.5
100

This is how you calculate class width.

What is:

Divide the range by the number of classes

100
Cumulative Frequency Graph (aka)
What is an Ogive?
100
The sum of the data values divided by the number of entries.
What is the mean?
100

The simplest measure of variance. (maximum-minimum)

What is the range?

100
Q1, Q2, Q3.
What are quartiles?
200
The equation for the Midpoint.
What is (upper class limit + lower class limit)/2 ?
200
I would use this type of display if I wanted to show attendance records over the 2012-2013 school year.
What is a Time Series chart?
200
Term used to describe a data set with two modes.
What is BIMODAL?
200

x -mean =

This equation calculates...

What is the deviation of x?

200
The five number summary needed to create a box-and-whisker plot.
What is the max, min, Q1, Q2, Q3?
300
The sum of the frequencies of a class and all previous classes.
What is Cumulative Frequency?
300
A scatter plot is an example of this general type of data set.
What is a paired data set?
300
A way to describe a graph that has a tail that extends to the right.
What is Skewed Right?
300

What are the steps to calculate standard deviation?

1. Find the mean.

2. Find the deviations.

3.Square the deviations.

4. Add the deviations.

5. Divide by the number of data points. (Variance)

6. Square root the variance.

300
The process for finding outliers using the IQR.
What is multiply the IQR by 1.5. Add that product to Q3 and subtract it from Q1. Any numbers outside that new range are outliers.
400
The vertical scale of a frequency histogram.
What is "the frequencies"?
400

This is a vertical bar graph in decreasing order.

What is a Pareto Chart?

400

Calculate the mean of the data set:

5,5,8,7,5

What is 6?

400
Numbers associated with the Empirical Rule: ( ____ - _____ - ______ Rule)
What are 68, 95, and 99.7?
400
Equation to find the z score.
What is (Value - Mean )/ St. Dev.?
500
Important characteristics to look for when organizing and describing data.
What are CENTER, VARIABILITY, and SHAPE
500

Organizes data into a table based on place value.

What is a stem-and-leaf plot?

500
The equation for a weighted mean?
What is xbar = (sigma(x *w))/ (sigma (w))
500
Chebychev's Theorem and the definition of k.
What is 1 - (1/(k^2)) and the number of standard deviations away from the mean?
500
If a data value is larger than the mean, its z score will be ______.
What is positive?