Rates & Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, usually with different units, such as miles per hour or dollars per pound.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit. For example, if you spend $40 on 5 pounds of concrete, the unit rate is $8 per pound.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity. For example, if you have 60 miles in 3 hours, the unit rate is 60 miles ÷ 3 hours = 20 miles per hour.

Front

What does IQR stand for?

Back

IQR stands for Interquartile Range, which is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you find the IQR?

Back

To find the IQR, first determine Q1 and Q3, then subtract Q1 from Q3: IQR = Q3 - Q1.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, often expressed as 'a to b' or a:b.

Front

If the ratio of red fish to blue fish is 3:5 and there are 20 blue fish, how many red fish are there?

Back

There are 12 red fish.

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

Front

What does the median represent in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.