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Important Questions

Regression — Important Questions

ICSE · Class 11 · Artificial Intelligence

52 important questions from Regression for ICSE Class 11 Artificial Intelligence, with answers. Part of the ICSE Class 11 Artificial Intelligence syllabus.

52 questions32 flashcards5 formulas & key relations5 concepts

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52 Questions·
multiple choicemultiple correcttrue false

Important Questions from Regression

1multiple choice
3 marks

A regression line is y = mx + c. For the ice cream data, m = 1.5183 and c = 0.3049. What is the predicted y when x = 8 hours of sunshine?

Show answer

12.45

Substitute x = 8. First compute 1.5183 × 8 = 12.1464. Then add 0.3049. So y = 12.4513, which rounds to 12.45.

2multiple choice
3 marks

In a regression model, a student records x = 2, 3, 5, 7, 9 and y = 4, 5, 7, 10, 15. What is the value of N used in the least squares method?

Show answer

5

N is the number of data values. There are 5 x-values and 5 corresponding y-values, so N = 5.

3multiple choice
3 marks

A simple linear regression model has slope m = 5 and intercept b = 50. If x increases from 3 hours to 4 hours, by how many points does the predicted y change?

Show answer

5 points

In simple linear regression, the slope gives the change in y for a one-unit increase in x. Since the slope is 5, increasing x by 1 hour increases y by 5 points.

4multiple choice
3 marks

A regression model for dive depth is described by a straight line where the slope is 2.915 yards per minute. If dive duration increases by 4 minutes, what is the predicted increase in depth?

Show answer

11.66 yards

Multiply the slope by the change in time. 2.915 × 4 = 11.66 yards. So the predicted increase in depth is 11.66 yards.

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Frequently Asked Questions

What are the important topics in Regression for ICSE Class 11 Artificial Intelligence?
Key topics in Regression include Core Idea of Regression, Types of Regression, Regression Coefficient and Interpretation, Regression Line and Linear Regression. Study these first, then practise questions on each for Class 11 exams.
How many important questions are there in Regression?
Super Tutor has 52 practice questions for Regression, including multiple choice, multiple correct, true false questions. A sample with answers is on this page.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 11 Artificial Intelligence Important Questions

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