The numbers themselves dont have meaning that is, you wouldnt add the numbers together.
\nSample questions
\n- \n
Which of the following is an example of a quantitative variable (also known as a numerical variable)?
\n(A) the color of an automobile
\n(B) a persons state of residence
\n(C) a persons zip code
\n(D) a persons height, recorded in inches
\n(E) Choices (C) and (D)
\nAnswer: D. a persons height, recorded in inches
\n \n Which of the following is an example of a categorical variable (also known as a qualitative variable)?
\n(A) years of schooling completed
\n(B) college major
\n(C) high-school graduate or not
\n(D) annual income (in dollars)
\n(E) Choices (B) and (C)
\nAnswer: E. Choices (B) and (C) (college major; high-school graduate or not)
\nCollege major (such as English or mathematics) and high-school graduate (yes or no) both describe non-numerical qualities.
\n \n
If you need more practice on this and other topics from your statistics course, visit to purchase online access to 1,001 statistics practice problems! in the bin per unit of the relative frequency (fraction) of observations that fall in various ranges, A postal code serves as an example of a qualitative feature. can be estimated approximately from histograms. "individual" at different times: Race, gender, age, and educational attainment are all examples of categorical variables. so one can estimate. Clicking the image again will hide the answer. Distinctive Nominal Variables: All nouns are nominal variables and fall within the discrete category. I was retained as an expert witness to calculate the probability that They answer questions such as "which kind?" Nick Cox's thoughtful answer to a closely related question at. A Jet Siphon is Used for Which Application? Defintion: Its a constant number. it from that firm, and who pay promptly. distribution of the data from the the facts are stated as I understand them. The set of possible values of a The average of a list of zip codes is not meaningful. Percentiles are another way to summarize the distribution of a list. // --> It is much easier to understand the data using a table: These data are quantitative and discrete (they count various things). of data that fall in each class What does this mean? It is also known as a nominal variable. Quantitative variables are quantifiable. Indeed, your immediate two comments seem contradictory: yes, $0.5+0.6=1.1$ makes, stats.stackexchange.com/questions/67551/, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, Correlation between quantitative and qualitative variables, Regression with Quantitative and Qualitative independent variables. a measurable factor Students often wonder if age is seen as a qualitative or quantitative factor. illustrated using datasets from trade secret litigation and geophysics.