Which of the following describe discrete data? a. The...

Name: Problem 3, Chapter 1: Elementary Statistics
Uploaded: 2021-08-09T17:08:19-08:00
Duration: 2 min 55 s
Channel: Tamara Worner
Description: Which of the following describe discrete data? a. The numbers of people surveyed in each of the next several Gallup polls b. The exact heights of individuals in a sample of several statistics students c. The number of Super Bowl football games that must be played before one of the teams scores exactly 75 points

Which of the following describe discrete data? a. The numbers of people surveyed in each of the next several Gallup polls b. The exact heights of individuals in a sample of several statistics students c. The number of Super Bowl football games that must be played before one of the teams scores exactly 75 points

Which of the following describe discrete data?
a. The numbers of people surveyed in each of the next several Gallup polls
b. The exact heights of individuals in a sample of several statistics students
c. The number of Super Bowl football games that must be played before one of the teams scores exactly 75 points

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Key Concepts

Discrete Data

Discrete data consists of numerical values that are distinct and separate, usually arising from counting processes. These values are often whole numbers and there are gaps between possible values, meaning that not every number within a range is attainable. Understanding discrete data is key when dealing with statistics that involve counts or events that occur in distinct units.

Continuous Data

Continuous data represents values that can take any number within a range, including fractions and decimals, typically derived from measurement. This type of data does not have gaps between values because, theoretically, there are an infinite number of possible values within any interval. Distinguishing between continuous and discrete data is essential in statistical analysis as it informs the choice of analytical methods and the interpretation of results.

Transcript

00:01 Okay, in this problem we need to determine if a variable is discrete or continuous, and the key idea is to remember discrete means there's either a finite or a countable number of possible values for the variable, and continuous means it's not countable.

00:18 So let's take a look at some examples here.

00:21 First of all, the number of people surveyed in the certain number of gallop poles.

00:29 Okay, so the number of people surveyed.

00:36 So that is probably going to be something that's a finite number.

00:43 You're going to have like seven of them, right? so that would be discrete.

00:54 Another thing to just notice, you can't have one and a half people.

00:58 So that's going to be another clue that it's a discrete type of variable.

01:04 All righty.

01:05 Next one.

01:06 The exact height of individuals in a sample of several statistics students.

01:10 So if i go through and measure everybody in my stats class, their height, well, that could be any number.

01:20 It could be 45, excuse me, it could be 45 centimeters.