Which choice is a variable?
A) The cost of your daily newspaper
B) Your shoe size
C) The number of states in the United States of America
D) The amount a teenager makes babysitting correct answers The amount a teenager makes
babysitting
Which choice is a variable?
A) The colors and styles of your shoes
B) The amount a babysitter charges per hour
C) The operating system on your phone
D) The name of the largest mountain range in the United States correct answers The colors and
styles of your shoes
Which choice is a quantitative variable?
A) M, representing the federal minimum wage
B) P, representing the monthly profit based on the number of customers who needed plumbing
services
C) R, representing the monthly rent for your company's office building
D) S, representing the number of regular weekly shipping deliveries your company's trucks make
correct answers P, representing the monthly profit based on the number of customers who needed
plumbing services
In a lawn-mowing business, the amount of time an employee spends mowing a lawn depends on
the size of the lawn. It might also depend on some other factors.
Which choice represents a qualitative variable in this lawn-mowing business?
A) W, representing the number of hours the employee spends working each day
, B) M, representing the maximum amount of lawn that a given mower can complete per hour
C) H, representing the hilliness of the lawn
D) G, representing the amount of gas needed to mow a given lawn correct answers H,
representing the hilliness of the lawn
Which variable is related to the variable temperature?
A) Computer sales
B) Pen sales
C) Hot chocolate sales
D) Book sales correct answers Hot chocolate sales
Is the number of years someone regularly deposits money in a savings account related to the
amount of money in the account? Why? correct answers Yes, the total amount in the account
simply depends on the amount deposited, plus any interest. Another way of looking at it is that
the longer someone makes regular deposits into a savings account, the more money is in the
account.
The amount of food prepared for a catered event depends on the number of people attending.
Which variable is the independent variable?
A) The amount of food prepared
B) The number of people attending correct answers The number of people attending
You own a car wash that charges $10 for each car that goes through. If you wash 50 cars a day,
your revenue is $10×50=$500. If you only wash 20 cars a day, your revenue is $10×20=$200.
Which variable is the independent variable?
A) Your company's revenue
B) The number of cars washed correct answers The number of cars washed
The amount of money you spend on apps depends on the number of apps you buy.