Back to Library

Least Squares Regression Analysis

Statistics

A study on calculating the least squares regression line and verifying the sum of residuals.

Regression Mathematics Data Analysis

10 Questions Hard Ages 16+ Aug 27, 2026

Practice Test PDF Answer Key PDF

Choose a Study Format

Quiz

Test your knowledge with multiple-choice questions and instant feedback.

Flashcards

Flip through cards to review terms, definitions and key concepts.

True or False

Quickly decide if statements are true or false to reinforce understanding.

Match Game

Race against time to match questions with their correct answers.

Study Guide

Read through all topics and answers as a comprehensive study reference.

Listen Mode

Listen to questions and answers read aloud — great for audio learners on the go.

Embed This Study Set

Add this interactive study set to your website or blog — all 6 formats included.

<div data-quixly-id="6461"></div>
<script src="https://www.quixlylearn.com/assets/embed/widget.js"></script>

Learn more about embedding →

About this Study Set

This study set covers Statistics through 10 practice questions. A study on calculating the least squares regression line and verifying the sum of residuals. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 10 questions from the Least Squares Regression Analysis study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the general form of the least squares regression line?

A y = a + bx
B y = mx + c
C y = ax + b
D y = bx + a

2 What is the value of the sum of the residuals (Σe_i)?

A 1
B 0.259
C 0
D 0.72

3 What is the calculated sum of the squares of the residuals (Σe_i²)?

A 0.259
B 1.33
C 16.9
D 0.0784

4 In the equation y = 0.72 + 1.33x, what is the intercept 'a'?

A 1.33
B 0.72
C 10
D 16.9

5 In the equation y = 0.72 + 1.33x, what is the slope 'b'?

A 0.72
B 1.33
C 10
D 16.9

6 What is the estimated value of y when x = 0?

A 0
B 0.72
C 1.33
D 2.05

7 What is the estimated value of y when x = 1?

A 0.72
B 1.33
C 2.05
D 3.38

8 What is the estimated value of y when x = 2?

A 2.05
B 3.38
C 4.71
D 6.04

9 What is the estimated value of y when x = 3?

A 3.38
B 4.71
C 6.04
D 7.37

10 What is the estimated value of y when x = 4?

A 4.71
B 6.04
C 7.37
D 8.70

📱

Study on the go

Download Quixly and access all study formats on your phone — anywhere, anytime.