unit 5.5 mini test review p5

Front

What is the median of a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the median of the following data set: 7, 0, 10, 4, 20, 2, 11?

Back

First, order the data: 0, 2, 4, 7, 10, 11, 20. The median is 7, the middle value.

Front

What does the inequality x < 2 represent on a number line?

Back

It represents all values to the left of 2, not including 2 itself.

Front

How do you solve the inequality 3(m + 7) < 28?

Back

First, distribute: 3m + 21 < 28. Then, subtract 21 from both sides: 3m < 7. Finally, divide by 3: m < 7/3.

Front

What is the first quartile (Q1) in a data set?

Back

The first quartile is the median of the lower half of the data set, which separates the lowest 25% of the data from the rest.

Front

How do you calculate the first quartile of the data set: 58, 60, 64, 66?

Back

Order the data: 58, 60, 64, 66. The first quartile (Q1) is 60.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is less than, greater than, less than or equal to, or greater than or equal to the other.

Front

What is the difference between a median and a mean?

Back

The median is the middle value of a data set, while the mean is the average of all values in the data set.

Front

How do you find the mean of a data set?

Back

Add all the numbers together and then divide by the total number of values.

Front

What does the symbol '≥' mean in inequalities?

Back

It means 'greater than or equal to'.