No, age is not a nominal variable; it is typically considered a continuous or ordinal variable. Age represents a measurable quantity that can be expressed in years, months, or days, allowing for meaningful mathematical operations. While you can categorize age into groups (like "teenagers," "adults," etc.), the actual age values themselves have a clear order and numerical significance.
Mean
Ordinal. Though more likely interval or even ratio scale.
A nominal variable is a type of categorical variable that represents distinct categories without any inherent order or ranking. Examples include gender, nationality, or favorite color, where the values serve to label different groups. Since nominal variables do not have a quantitative value, statistical analysis typically involves counting occurrences or determining proportions within each category.
A real variable is a quantitative measure that can take on a wide range of numerical values, allowing for meaningful mathematical operations such as addition and subtraction; examples include height, weight, and temperature. In contrast, a nominal variable is a categorical measure that represents distinct categories without any inherent order or ranking; examples include gender, nationality, and colors. Essentially, real variables express quantities, while nominal variables classify data into groups.
Nominal (categorical), and Dependent (it is measured and accounted for, but a researcher cannot manipulate gender).
Age is acontinuousvariable because it can bemeasured with numbers. A categorical variable deals with nominal variables example male or female, political view, etc
Nominal
yes
No. A discrete variable is one that takes discrete numerical values. But a discrete variable can be ordered while a nominal one cannot. Age, in years, is a discrete variable, and you can say that a 10-year old is younger than a 20-year old who is younger than a 40-year old. Favourite fruit would generate a nominal variable but you cannot say that a banana is more than an apple which, in turn, is more than an orange, etc. (Remember, you are talking only of the nominal values of the fruit - not their price or size or nutritional value or any such characteristic.)
No. It is a discrete quantitative variable.
A nominal variable is a variable measured in current dollars (the value of the dollar for the specific period discussed), and a real variable is a variable measured in constant dollars (the value of the dollar for the base period). That is, a real variable adjusts for the effects of inflation.
Mean
It depends how we have computed %age. By and large, percentage is a summary statistic. Its a categorical variable (may be nominal or ordinal). That way its a discrete. In case of assay or yield computations it becomes a continuous variable. Naresh K Chawla nkchawla@gmail.com
It depends how we have computed %age. By and large, percentage is a summary statistic. Its a categorical variable (may be nominal or ordinal). That way its a discrete. In case of assay or yield computations it becomes a continuous variable. Naresh K Chawla nkchawla@gmail.com
nominal
Ordinal. Though more likely interval or even ratio scale.
Ordinal