MATLAB MCQs (Chapterwise Multiple Choice Questions)

Which statement creates a logical array that is 1 if the element in passwords contains a digit and 0 if it does not? Passwords = {'abcd' '1234' 'qwerty' 'love1'};

Contains(password, '\d')

~isempty(regexp(passwords, '\d'))

Cellfun(@(x) ~isempty(regexp(x, '\d')), passwords)

Regexp(passwords, '\d')

Answer & Explanation

Correct Answer: Cellfun(@(x) ~isempty(regexp(x, '\d')), passwords)

Note: This Question is unanswered, help us to find answer for this one

You have loaded a dataset of people's heights into a 100 x 1 array called height. Which statement will return a 100 x 1 array, sim_height, with values from a normal distribution with the same mean and variance as your height data?

Sim_height = std(height) + mean(height) * randn(100, 1);

Sim_height = mean(height) + std(height) * randn(100, 1);

Sim_height = randn(std(height), mean(height), [100, 1]);

Sim_height = randn(mean(height), std(height), [100, 1]);

Answer & Explanation

Correct Answer: Sim_height = mean(height) + std(height) * randn(100, 1);

Note: This Question is unanswered, help us to find answer for this one

For which of these arrays do mean, median, and mode return the same value?

[0 1 1 1 2]

[1 3 5 5 6]

[0 1 1 1 1]

[0 0 5 5 5]

Answer & Explanation

Correct Answer: [0 1 1 1 2]

Note: This Question is unanswered, help us to find answer for this one

What does the Profiler track?

Execution time

Command history

Errors

The value of variables

Answer & Explanation

Correct Answer: Execution time

Note: This Question is unanswered, help us to find answer for this one

What is the size of b? a = [1 2 3]; b = repmat(a,2,3);

1x3

3x2

2x3

2x9

Answer & Explanation

Correct Answer: 2x9

Note: This Question is unanswered, help us to find answer for this one

What built-in definition does i have?

Basic imaginary unit

Index function

Infinity

Index variable

Answer & Explanation

Correct Answer: Basic imaginary unit

Note: This Question is unanswered, help us to find answer for this one

Which statement returns a cell array of the strings containing 'burger' from menu? Menu = {'hot dog' 'corn dog' 'regular burger' 'cheeseburger' 'veggie burger'}

Menu{strfind(menu, 'burger')}

Menu(strfind(menu, 'burger'))

Menu{contains(menu, 'burger')}

Menu(contains(menu, 'burger'))

Answer & Explanation

Correct Answer: Menu(contains(menu, 'burger'))

Note: This Question is unanswered, help us to find answer for this one

Where in the UI can you see what variables have been created, their values, and their class?

Editor

Command window

Details

Workspace

Answer & Explanation

Correct Answer: Workspace

Note: This Question is unanswered, help us to find answer for this one

Based on the code below, c is the _ of a. a = rand(1, 11); b = sort(a); c = b(1, ceil(end/2));

Median

Mode

Mean

Margin

Answer & Explanation

Correct Answer: Median

Note: This Question is unanswered, help us to find answer for this one

How do you access the value for the field name in structure S?

S['name']

S.name

S('name')

S{'name'}

Answer & Explanation

Correct Answer: S.name

Note: This Question is unanswered, help us to find answer for this one

MATLAB Quick Quiz

Poor Results!

You need a lot of improvement.

Just don't give up!

Correct Answers: 0/10

Start Practicing with our MCQs given below.