/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q 2.18 聽Explain the difference between... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Q 2.18 (page 49)

Explain the difference between

a. frequency and relative frequency.

b. percentage and relative frequency.

Short Answer

Expert verified
  1. Frequency refers to the number of observations that fall into a given category. Relative frequency is the percentage of a class given as a decimal.
  2. The value is calculated by dividing the class's frequency by the total number of observations and multiplying the result by 100. It's a proportion. Relative frequency is the percentage of a class given as a decimal.

Step by step solution

01

Part (a) Step 1: Given Information

We have to distinguish the frequency and relative frequency.

02

Part (a) Step 2 Explanation

The distinction between frequency and relative frequency can be easily defined as follows: frequency uses the actual values of each class in a statistical data set, whereas relative frequency compares these individual values to the overall totals of all classes in the data set.

03

Part (b) Step 1 Given Information

We have to distinguish percentage and relative frequency.

04

Part (b) Step 2 Explanation

To calculate relative frequencies, divide each frequency by the total number of students in the sample. Relative frequencies can be expressed using fractions, percents, or decimals.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Construct a stem-and-leaf diagram for the data, using one line per stem.

Residential Energy Consumption. Construct a relative frequency polygon for the energy-consumption data given in Exercise 2.84 Use the classes specified in that exercise.

A quantitative data set has been grouped by using limit grouping with equal-width classes. The lower and upper limits of the first class are 3and 8, respectively, and the class width is 6.

a. What is the class mark of the second class?

b. What are the lower and upper limits of the third class?

c. Which class would contain an observation of 23?

Clocking the Cheetah. Construct a relative-frequency polygon for the speed data given in Exercise 2.89. Use the classes specified in that exercise.

Adjusted Gross Incomes. The Internal Revenue Service (IRS) publishes data on adjusted gross incomes in the document Siarisuics of Income, Individual Income Tax Reforms. The following relative-frequency histogram shows one year's individual income tax returns for adjusted gross incomes of less than 50,000.
See all solutions

Recommended explanations on Math Textbooks

Statistics

Read Explanation

Pure Maths

Read Explanation

Calculus

Read Explanation

Applied Mathematics

Read Explanation

Discrete Mathematics

Read Explanation

Decision Maths

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.