Here are the numbers of children in 14 elementary school classes.

19, 20, 18, 17, 17, 18, 18, 16, 17, 17, 18, 20, 20, 20
Find the modes of this data set.
If there is more than one mode, write them separated by commas.
If there is no mode, click on "No mode."

Mode essentially means most common. So it’s the value that appears the most.

16 x 1
17 x 4
18 x 4
19 x 1
20 x 4

So 17, 18, 20

The solution to this exercise has been attached below. The problem has been solved in this way:

1. Different forms of linear equations. Point slope-intercept equation of the line that passes through two points.2. Inverse Function. 3. Average Rate of Change.4. Comparison of linear equations and inequalities5. Real-life problems6. Imaginary Number7. Radicals8. Rational exponent and radical form9. Radical expressions10. Quadratic equation11. Trinomial12. Factoring expressions13. Quadratic and linear graph14. A problem of height