Data classification Flashcards
What is qualitative data?
aka categorical data, consists of labels and descriptions of traits.
music type, eye color, …
________ is known as numerical data, consists of counts or measurements.
quantitative data
ie height, weight, mpg, …
Classify this statement as quantitative or qualitative.
“Shades of red paint in a how improvement store”
qualitative
Classify this statement as quantitative or qualitative.
“Rankings for the most popular paint colors for the season”
quantitative (keyword ranking)
Classify this statement as quantitative or qualitative.
“Amount of red primary dye necessary to make one gallon each shade of red paint”
quantitative (keyword amount of)
Classify this statement as quantitative or qualitative.
“Number of paint choices available at several stores”
quantitative (keyword number)
Q: Is the variable ‘number of toes’ qualitative or quantitative?
quantitative (keyword number)
Describe discrete data?
quantitative data that can take on only particular values and are usually counts or ratios.
Describe continuous data?
quantitative data that can take on any given value in a given interval and are usually measurements
True or False
Qualitative data is neither discrete nor continuous
True
Determine if the following statement is continuous or discrete data
“Temperatures in F of cities in South Carolina”
continuous
discrete based on what is currently being reported
Determine if the following statement is continuous or discrete data
“Number of houses in various neighborhoods in a city”
discrete (keyword numbers)
Determine if the following statement is continuous or discrete data
“Number of elliptical machines in a YMCA in your state”
discrete (keyword numbers)
Determine if the following statement is continuous or discrete data
“Heights of doors”
continuous (measurement)
Q: Is the variable ‘grade point average” discrete of continuos
discrete when reported on a transcript or report card.
What are the four levels of measurement? French for black NOIR
nominal
ordinal
interval
ratio
Nominal measurement is?
description
Ordinal measurement is?
ordering
An interval measurement is?
differences between levels
A ratio measurement is?
true zero
True or False
Data at the nominal level of measurement are qualitative data consisting of labels or names.
True
ie eye color
True or False
Data at the ordinal level of measurement are qualitative data that can be arranged in a meaningful order, but calculations such as addition or division don’t make sense
True
ie social-economical status (position)
Nominal or ordinal?
“The seat numbers on a concert ticket, A32 and B14
ordinal (seats are ordered)
Nominal or ordinal?
The genres of music performed at the 2013 Grammys’s
nominal (categories)
True or False
Data at the interval level of measurement are quantitative data that can be arranged in a meaningful order, and differences between data entries are meaningful.
True
ie shoe size, temp going from 77 to 82, birth years of a graduating class.
True or False
Data at the ratio level of measurement are quantitative data that can be ordered, differences between data entries are meaningful, and the zero points indicate the absence of something.
True
ie year of birth with age, an age of 0
a height of 0 would indicate a lack of height.
Classifying data by the level of measurement
Consider the ages in whole years of U.S. presidents when they were inaugurated. What level of measurement are these data?
ratio
Levels of measurement for qualitative values are?
nominal - names
ordinal - order
Levels of measurement for quantitative values are?
interval - 0 is the place holder
ratio - 0 represents the absence of something
Determine the following classifications for the given data sets. qualitative or quantitative; discrete, continuous; and level of measurement.
“Finishing times for runners in the Labor Day 10k race”
ratio level
continuous
quantitative
Determine the following classifications for the given data sets. qualitative or quantitative; discrete, continuous; and level of measurement.
“Colors in a crayon box”
qualitative
neither discrete or continuous
nominal
Determine the following classifications for the given data sets. qualitative or quantitative; discrete, continuous; and level of measurement.
“Boiling points (on the Celsius scale) for various caramel candies
quantitative
continuous
interval
Determine the following classifications for the given data sets. qualitative or quantitative; discrete, continuous; and level of measurement.
“The top ten Spring Break destinations as ranked by MTV”
qualitative
neither discrete or continuous
ordinal (ranking)
