MATLAB Test

From what distribution does the rand() function return values?

UNIFORM

BINOMIAL

NORMAL

POISSON

What does the Profiler track?

ERRORS

EXECUTION TIME

COMMAND HISTORY

THE VALUE OF VARIABLES

What is %% used for?

BLOCK QUOTES

CODE SECTIONS

ARGUMENT PLACEHOLDER

CONVERSION SPECIFIER

What is the . character NOT used for?

CELL ARRAY ACCESS

A DECIMAL POINT

ELEMENT-WISE OPERATIONS

STRUCTURE FIELD ACCESS

Which function could you use for multiple linear regression?

POLYFIT

REGRESS

POLYVAL

SOLVE

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

[0 1 1 1 1]

[1 3 5 5 6]

[0 0 5 5 5]

[0 1 1 1 2]

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

S{'NAME'}

S['NAME']

S('NAME')

S.NAME

What built-in definition does i have?

INDEX FUNCTION

INDEX VARIABLE

BASIC IMAGINARY UNIT

INFINITY

You have plotted values of cosine from -10 to 10 and want to change the x-axis tick marks to be every pi, from -3pi to 3pi. Which statement will do that?

XTICKS(-3*PI:PI:3*PI)

XTICKS(-3*PI:3.14:3*PI)

XTICKS(LINSPACE(-3*PI(),3*PI(),PI())

XTICKS(LINSPACE(-3*PI,3*PI,PI)

Which function CANNOT be used to randomly sample data?

DATASAMPLE

RANDI

RESAMPLE

RANDPERM

What is true of a handle class object?

ALL COPIES OF HANDLE OBJECTS REFER TO THE SAME UNDERLYING OBJECT.

HANDLE OBJECTS DO NOT HAVE A DEFAULT EQ FUNCTION.

HANDLE OBJECTS CANNOT REFERENCE ONE ANOTHER.

WHEN YOU PASS A HANDLE OBJECT TO A FUNCTION, A NEW OBJECT IS MADE THAT IS INDEPENDENT OF THE ORIGINAL.

Which choice has a different final result in f10 than the other three?

F10 = PROD(1:10)

F10 = 1; I = 1; WHILE I <= 10 I = I + 1; F10 = I*F10; END

F10 = FACTORIAL(10)

F10 = 1; FOR I=1:10 F10 = F10*I; END

Which choice will NOT give you a 5 x 5 identity matrix?

A = RAND(5); ROUND(A * INV(A))

DIAG(ONES(5, 1))

IDENTITY(5)

EYE(5)

Which statement returns the roots for the polynomial x^2 + 2x - 4?

POLY([1 2 -4])

SOLVE(X^2 + 2X - 4 == 0)

POLYFIT(X^2 + 2X - 4 == 0)

ROOTS([1 2 -4])

Which choice is the proper syntax to append a new elements a to the end of 1x 2 dimensional cell array C?

C = {C A};

C = CELLCAT(C A)

C = CAT(2, {A}, C)

C{END+1}=A

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 = RANDN(STD(HEIGHT),MEAN(HEIGHT),[100,1]);

SIM_HEIGHT = STD(HEIGHT)+MEAN(HEIGHT)*RANDN(100,1);

SIM_HEIGHT = RANDN(MEAN(HEIGHT),STD(HEIGHT),[100,1]);

SIM_HEIGHT = MEAN(HEIGHT)+STD(HEIGHT)*RANDN(100,1);

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'))

Which statement is true about the sparse matrices?

YOU CAN USE THE SPARSE FUNCTION TO REMOVE EMPTY CELLS FROM CELL ARRAY VARIABLES.

SPARSE MATRICES ALWAYS USE LESS MEMORY THAN THEIR ASSOCIATED FULL MATRICES.

MIXTURES OF SPARSE AND FULL MATRICES CAN BE COMBINED IN ALL OF MATLAB'S BUILT-IN ARITHMETIC OPERATIONS.

THE SPARSE FUNCTION REQUIRES ITS INPUT TO BE A FULL MATRIX WITH AT LEAST 50% ZERO ELEMENTS.

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')

Which is NOT a function that adds text to a plot?

TITLE

TEXT

LABEL

LEGEND

What kind of files are stored with the .mat extension?

FIGURE FILES

STORED VARIABLE FILES

FUNCTION FILES

SCRIPT FILES

What do you call in the command window to see all the variables in the workspace and their classes?

WHO

WHO ALL

WHOS

VARS

Which statement returns the roots for the polynomial x^2 +2x - 4?

SOLVE(X^2 +2X - 4==0)

POLY([1 2 -4])

POLYFIT(X^2 +2X - 4==0)

ROOTS([1 2 -4])

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

WORKSPACE

COMMAND WINDOW

EDITOR

DETAILS

Which statement will return all the odd numbers from 1 to 9?

ISODD(1:9)

1:ODD:9

2*[1:5]+1

1:2:9

You wrote a new function named snap in an m-file and when you call it, you're not getting the output you expect. You previously wrote a different function named snap, which you think might also be on the search path. Which command can you use to see if the old snap function is being called?

LOOKFOR

WHAT

WHICH

WHO

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

3 X 2

2 X 9

1 X 3

2 X 3

What is a key difference between && and &?

&& IS A BITWISE OPERATOR AND & IS NOT.

&& IS ALWAYS SLOWER THAN &.

&& EMPLOYS SHORT-CIRCUITING BEHAVIOR AND & DOES NOT.

&& IS A LOGICAL OPERATOR AND & IS NOT.

Which statement reverses vector a?

A(END:-1:1)

REVERSE(A)

REV(A)

A(::-1)

For a 5 x 5 array, the two subscript index (4,2) indexes the same location as linear index ___.

7

8

17

9

How is the random seed for MATLAB's random number generator first initializedin a MATLAB Session?

SEED IS UNDEFINED UNTIL IT IS INITIALIZED BY THE USER.

SEED IS SET TO A VALUE BASED ON THE CURRENT TIME WHEN USER FIRST CALLS RAND()

SEED IS SET TO A VALUE BASED ON THE CURRENT TIME ON STARTUP.

SEED IS SET TO A STATIC DEFAULT VALUE ON STARTUP.

Which command will create a 10-element vector v with values from 1 to 10?

V = {1:10}

V = [1-10]

V = 1:10

V = (10)

What is a difference between global variable and persistent variables?

GLOBAL VARIABLES HAVE A HIGHER PERFORMANCE OVERHEAD THAN PERSISTENT VARIABLES.

GLOBAL VARIABLES REMAIN IN MEMORY AFTER CLEAR ALL; PERSISTENT VARIABLES DO NOT.

GLOBAL VARIABLES CAN BE USED TO CACHE DATA IN MEMORY; PERSISTENT VARIABLES CANNOT.

GLOBAL VARIABLES ARE ACCESSIBLE OUTSIDE THE FUNCTION SCOPE; PERSISTENT VARIABLES ARE NOT.

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Exam Type:	MATLAB MCQ Skill Test
Questions Type:	Multiple Choice Questions
Total Questions:	33
Time Limit:	30 Minutes
Last Update	June, 2025

Pass MATLAB Exam

MATLAB Quiz

From what distribution does the rand() function return values?

What does the Profiler track?

What is %% used for?

What is the . character NOT used for?

Which function could you use for multiple linear regression?

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

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

What built-in definition does i have?

You have plotted values of cosine from -10 to 10 and want to change the x-axis tick marks to be every pi, from -3pi to 3pi. Which statement will do that?

Which function CANNOT be used to randomly sample data?

What is true of a handle class object?

Which choice has a different final result in f10 than the other three?

Which choice will NOT give you a 5 x 5 identity matrix?

Which statement returns the roots for the polynomial x^2 + 2x - 4?

Which choice is the proper syntax to append a new elements a to the end of 1x 2 dimensional cell array C?

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?

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

Which statement is true about the sparse matrices?

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'};

Which is NOT a function that adds text to a plot?

What kind of files are stored with the .mat extension?

What do you call in the command window to see all the variables in the workspace and their classes?

Which statement returns the roots for the polynomial x^2 +2x - 4?

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

Which statement will return all the odd numbers from 1 to 9?

You wrote a new function named snap in an m-file and when you call it, you're not getting the output you expect. You previously wrote a different function named snap, which you think might also be on the search path. Which command can you use to see if the old snap function is being called?

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

What is a key difference between && and &?

Which statement reverses vector a?

For a 5 x 5 array, the two subscript index (4,2) indexes the same location as linear index ___.

How is the random seed for MATLAB's random number generator first initializedin a MATLAB Session?

Which command will create a 10-element vector v with values from 1 to 10?

What is a difference between global variable and persistent variables?

MATLAB Test Explained

MATLAB Test

Pass MATLAB Exam

MATLAB Quiz

From what distribution does the rand() function return values?

What does the Profiler track?

What is %% used for?

What is the . character NOT used for?

Which function could you use for multiple linear regression?

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

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

What built-in definition does i have?

You have plotted values of cosine from -10 to 10 and want to change the x-axis tick marks to be every pi, from -3*pi to 3*pi. Which statement will do that?

Which function CANNOT be used to randomly sample data?

What is true of a handle class object?

Which choice has a different final result in f10 than the other three?

Which choice will NOT give you a 5 x 5 identity matrix?

Which statement returns the roots for the polynomial x^2 + 2x - 4?

Which choice is the proper syntax to append a new elements a to the end of 1x 2 dimensional cell array C?

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?

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

Which statement is true about the sparse matrices?

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'};

Which is NOT a function that adds text to a plot?

What kind of files are stored with the .mat extension?

What do you call in the command window to see all the variables in the workspace and their classes?

Which statement returns the roots for the polynomial x^2 +2x - 4?

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

Which statement will return all the odd numbers from 1 to 9?

You wrote a new function named snap in an m-file and when you call it, you're not getting the output you expect. You previously wrote a different function named snap, which you think might also be on the search path. Which command can you use to see if the old snap function is being called?

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

What is a key difference between && and &?

Which statement reverses vector a?

For a 5 x 5 array, the two subscript index (4,2) indexes the same location as linear index ___.

How is the random seed for MATLAB's random number generator first initializedin a MATLAB Session?

Which command will create a 10-element vector v with values from 1 to 10?

What is a difference between global variable and persistent variables?

MATLAB Test Explained

You have plotted values of cosine from -10 to 10 and want to change the x-axis tick marks to be every pi, from -3pi to 3pi. Which statement will do that?