When Ben increases the temperature difference between two junctions, the voltage also increases. What type of variable is voltage in the above situation?

Confounding

Response

Independent

Explanatory

Which of these represents a binomial question?

Do you own a rabbit?

What are the names of your pets?

How many animals do you own?

How does being a pet owner make you feel?

In 2011, there were 150 participants in a quiz competition. In 2012, there were 185 participants in this quiz competition. Select the true statement about participants in the quiz competition from 2011 to 2012 (percentages are rounded to the nearest tenths place).

• A.)
• B.)
• C.)
• D.)

The absolute change is -35 students, and the relative change indicates a decrease of 35%.

The absolute change is -35 students, and the relative change indicates a decrease of 23.3%.

The absolute change is 35 students, and the relative change indicates an increase of 23.3%.

The absolute change is 35 students, and the relative change indicates an increase of 18.92%.

5 Using Percentages in Statistics

Calculate the percentage points and percent change.

A department store manager noted that the sales of furniture contributed 20% of the store's profits in the year 2015 and 29% in the year 2016. Which set of statements aboutfurniture sales is true?

• A.)
• B.)
• C.)
• D.)

Furniture sales rose by 9 percentage points. There was a 31% increase in furniture sales.

Furniture sales rose by 45 percentage points. There was a 9% increase in furniture sales.

Furniture sales rose by 9 percentage points. There was a 45% increase in furniture sales.

Furniture sales rose by 31 percentage points. There was a 45% increase in furniture sales.

The following shows the Consumer Price Index (CPI) for the years 1995-1997. All of the values use a reference year of 1990.

Year CPI

1995 114

1996 128

1997 143

Which of the following is true about the CPI, based on the information?

$100 in 1996 would have been worth $100 in 1995.

$100 in 1990 would be equivalent to $143 in 1997.

$100 in 1997 would be equivalent to $143 in 1996.

$100 in 1995 would have been worth $114 in 1990.