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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.
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Which statistical tool is applicable in describing nominal variable?
Mean
What is the difference between a real variable and a nominal variable?
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.
What type of variable is gender?
Nominal (categorical), and Dependent (it is measured and accounted for, but a researcher cannot manipulate gender).
Is age a nominal variable?
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.
What representative value for a nominal variable such as religious affiliation?
For a nominal variable like religious affiliation, a representative value is typically the mode, which is the category that occurs most frequently in the dataset. Since nominal variables do not have a natural order or numerical value, the mode provides insight into the most common group within the data. Other descriptive statistics, such as percentages or proportions, can also be useful for summarizing the distribution of various affiliations.
The scale of measurement for the variable eye color is?
Nominal
Is race a nominal variable?
yes
Is the price of an item considered nominal variable?
No. It is a discrete quantitative variable.
Difference between nominal and real 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.
Which statistical tool is applicable in describing nominal variable?
Mean
What Jersey numbers of soccer players is an example of a variable?
nominal
Is a nominal variable a discrete variable?
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.)
Is months of the year a categorical variable?
It depends on how the variable is used. At its simplest, it would be a nominal or categorical value but, if used as part of a time series, it would be an ordinal variable.
What type of graph can be used to display the distribution of a nominal level variable?
It is a bar chart.
IS A major limitation of the nominal level of measurement is that a particular score represents only position with respect to some other score?
no. its a limitation of an ordinal variable not a nominal.
Example of nominal variable and real variable?
A nominal variable is one where observations are classified to categories eg small, medium and large for t-shirts. A real variable is one that takes numerical values, such as shirt size 12, 14, 16 etc. A real value may be a continuous (as opposed to discrete) variable but the very act of recording the observation usually results in the continuous variable being replaced by a discrete one.
What is The actual numerical value assigned to nominal level variable?
The whole point of a nominal variable is that is has no numerical value associated with it. With a binary measure you can allocated the values 1 and 0 or +1 and -1 for observations where the attribute is present or absent. If there are more than 2 values that the nominal variable can take then you can allocate any numbers that you want but in all cases the numbers do not have a value: they are simply symbols which can help for sorting and for binary comparisons.
