Table of contents

1. Intro to Stats and Collecting Data55m
2. Describing Data with Tables and Graphs1h 55m
3. Describing Data Numerically1h 45m
4. Probability2h 16m
5. Binomial Distribution & Discrete Random Variables2h 33m
6. Normal Distribution and Continuous Random Variables1h 38m
7. Sampling Distributions & Confidence Intervals: Mean1h 53m
8. Sampling Distributions & Confidence Intervals: Proportion1h 12m
- Sampling Distribution of Sample Proportion
  29m
- Confidence Intervals for Population Proportion
  42m
9. Hypothesis Testing for One Sample2h 19m
10. Hypothesis Testing for Two Samples3h 22m
11. Correlation1h 6m
12. Regression1h 4m
13. Chi-Square Tests & Goodness of Fit1h 20m
14. ANOVA1h 0m

1. Intro to Stats and Collecting Data

Intro to Stats

Statistics

1. Intro to Stats and Collecting Data

Intro to Stats

Previous problemNext problem

1:36 minutes

Problem 1.2.19

Textbook Question

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.
Statistics Classes In each of her classes, a statistics professor records the number of students who earned a grade of A.

Verified step by step guidance

Understand the difference between discrete and continuous data: Discrete data can only take specific values (often integers), while continuous data can take any value within a range.

Identify the variable in the problem: The variable here is the 'number of students who earned a grade of A' in each class.

Consider the nature of the variable: The number of students is a countable quantity, meaning it can only be whole numbers (e.g., 0, 1, 2, 3, etc.).

Determine if the data can take any value within a range or only specific values: Since the number of students is countable and cannot be fractional, it is limited to specific integer values.

Conclude whether the data is discrete or continuous: Based on the analysis, the data is discrete because it consists of countable, specific values.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Discrete Data

Discrete data refers to countable data points that can take on distinct, separate values. In the context of the question, the number of students earning a grade of A is a discrete data set because it involves counting individual students, resulting in whole numbers without fractions or decimals.

Continuous Data

Continuous data represents measurements that can take on any value within a given range, often involving fractions or decimals. Unlike discrete data, continuous data is not countable but measurable, such as height or temperature. Understanding this distinction helps in identifying the nature of the data set in the question.

Data Set Classification

Classifying data as discrete or continuous is crucial for selecting appropriate statistical methods. Discrete data often uses methods like frequency counts and probability distributions, while continuous data might involve measures like mean and standard deviation. Recognizing the type of data helps in applying the correct analytical techniques.

Watch next

Master Introduction to Statistics Channel with a bite sized video explanation from Patrick

Start learning

Related Videos

Related Practice

Textbook Question

In Exercises 5–12, identify whether the given value is a statistic or a parameter.

Drivers According to the Federal Highway Administration, there are 212 million licensed drivers in the United States.

Textbook Question

In Exercises 5–12, identify whether the given value is a statistic or a parameter.

Smart Phones In a Pew Research Center poll, a sample of adults in the United States was obtained, and it was found that 72% of them own smart phones.

Textbook Question

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.

Fraud Detection While monitoring Internet traffic in order to detect fraudulent activity, a researcher records the interarrival times (sec) between incoming Internet queries.

Textbook Question

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.

Students Your statistics professor records the number of students who pass each of her courses.

Textbook Question

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

College Students In order to better plan for the incoming freshman class, a college dean asks each newly admitted student to identify their likely major (physics, business, math, psychology, engineering, law, etc.).

Textbook Question

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

Movie Ratings In a college film studies course, students rate ten documentaries using a scale of 0 to 5 stars.

Textbook Question

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

Criminology In a criminology study, the lengths of prison sentences are obtained for randomly selected subjects convicted of auto theft.

Textbook Question

In Exercises 21–28, determine which of the four levels of measurement (nominal, ordinal, interval, ratio) best describes the given data.

Areas of States A data set consists of the areas of each of the 50 United States.

Show more practices

Download the Mobile app

Privacy

Do not sell my personal information

Accessibility

Patent notice

Sitemap

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.Statistics Classes In each of her classes, a statistics professor records the number of students who earned a grade of A.

Key Concepts

Discrete Data

Continuous Data

Data Set Classification

Watch next

In Exercises 13–20, determine whether the data are from a discrete or continuous data set.
Statistics Classes In each of her classes, a statistics professor records the number of students who earned a grade of A.