Review for unit one test

Front

What is the formula to find a weighted mean?

Back

Front

If the teacher-student ratio is 1:15 and there are 480 students, how many teachers are there?

Back

32 teachers

Front

A box of 4 cupcakes costs $9. How much would 2 cupcakes cost at the same rate?

Back

$4.50

Front

Find the median of the following data set: 12, 5, 9, 18, 22, 25, 5

Back

12

Front

What is the median of this data set? 6, 3, 4, 9, 2, 12, 12, 4

Back

5

Front

Define weighted mean.

Back

The weighted mean is the average of a set of values, where each value is multiplied by a weight that reflects its importance.

Front

How do you calculate the median of a data set?

Back

To find the median, arrange the numbers in ascending order and identify the middle value.

Front

What is the significance of the teacher-student ratio?

Back

It indicates the number of teachers available for each student, affecting the quality of education.

Front

If 4 cupcakes cost $9, what is the cost per cupcake?

Back

$2.25 per cupcake.

Front

What is the median of an even set of numbers?

Back

The median is the average of the two middle numbers.