Statistical Variability

What kind of question is this:

"What is the cost of a movie ticket in Los Angeles?"

• Not a statistical question - No variability in data

• Statistical question - There is variability in data

What kind of question is this:

"How many video games does each 6th grader have?"

• Not a statistical question - No variability in data

• Statistical question - There is variability in data

What kind of question is this:

"How old are the animals in the zoo?"

• Not a statistical question - No variability in data

• Statistical question - There is variability in data

What kind of question is this:

"What is the height of the boys in 1st grade?"

• Not a statistical question - No variability in data

• Statistical question - There is variability in data

If the responses have variability, then it is a statistical question.

• True

• False

What kind of question is this:

"What is your favorite type of pizza?"

• Not a statistical question - No variability in data

• Statistical question - There is variability in data

-describes how spread out the data is

• A) variability

• B) interval

• C) frequency

• D) mean

occurs when observations in a data set are NOT all the same

• variability

• statistically

• historically

• reliability

difference between the largest and smallest value of a data set

• mean

• median

• mode

• range

-graph used to convey information about center and variability

• stem and leaf plot

• dot plot

• histogram

• box plot