Explain the meaning of a. qualitative variable. b. discrete, quantitative variable. c. continuou

Explain the meaning of a. qualitative variable. b. discrete,...

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Key Concepts

Discrete Quantitative Variable

A discrete quantitative variable is a numerical variable that can only take specific, distinct values, often counted as whole numbers. These variables represent countable items, where there are clear separations between the values and no intermediate values exist within the range.

Continuous Quantitative Variable

A continuous quantitative variable is a numerical variable that can take on any value within a given range or interval. These variables are derived from measurements and can assume an infinite number of possible values, including fractions and decimals, within the limits of precision.

Qualitative Variable

A qualitative variable is one that describes characteristics or attributes that cannot be measured numerically. These variables categorize data into groups based on qualities or labels, such as types or names, without any inherent numerical value or order.

Transcript

00:01 Okay, so what is a qualitative variable? a variable that is not numerical and that fits the given data into categories.

00:08 So this is nothing but a categorical variable.

00:15 Categorical variable.

00:16 What would be an example of this? let's say eye colors, right? there are only so many colors of eyes, right? like blue, brown, black and very rarely you will see green.

00:29 Right? so eye color is an example of categorical variables.

00:31 I gave you four eye colors.

00:32 Now maximum number of people will fall in one of these categories.

00:36 Either they'll be blue colored, they'll have blue color eyes, or they'll have black colorized or brown colorized or maybe green color eyes, right? so this is an example of categorical variable.

00:47 It fits the data actually falls into various categories.

00:52 And those categories are given by this variable.

00:56 The second example is, the second one is they are saying, what is a discrete quantitative variable? now, what is a discrete quantitative variable? okay, number of students.

01:08 Quantitive variable means that it is numerical in nature, right? there can be any number of, what can we say? this number can be very big or it can be very small.

01:22 So let's say, for example, number of students, number of students in a class, right? number of students in a class...

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