Math Skills in Science Scientific Inquiry #4

Vocabulary Mean Mean Median Median Mode Mode

Mathematical Language When you use mathematical language to analyze your data, you will find that it is easier to communicate your results to the rest of the world. When you use mathematical language to analyze your data, you will find that it is easier to communicate your results to the rest of the world. Math is often called the universal language because its rules are the same all over the world. Math is often called the universal language because its rules are the same all over the world.

Calculating the Mean The mean is the average of all the numbers of a group. The mean is the average of all the numbers of a group. It is found by adding together all the values, and then dividing the sum by the number of values present. It is found by adding together all the values, and then dividing the sum by the number of values present. Find the mean of: Find the mean of: 82, 91, 95, 101, 95, 84, 89, 89 _________

Calculating the Median The median tells us which value is “in the middle.” The median tells us which value is “in the middle.” You can find the median by ordering the values from lowest to highest and then seeing which value is in the middle. You can find the median by ordering the values from lowest to highest and then seeing which value is in the middle.

Calculating the Median If the number of values in the number set is odd, the median is just the middle number. If the number of values in the number set is odd, the median is just the middle number. If the number of values in the number set is even, add the middle two numbers and divide them by two. If the number of values in the number set is even, add the middle two numbers and divide them by two. Find the median of: Find the median of: 82, 91, 95, 101, 95, 84, 89, 89 _________ 82, 91, 95, 101, 95, 84, 89, 89 _________

Calculating the Mode The mode is the value that appears most often in a group of numbers. The mode is the value that appears most often in a group of numbers. A number set may have just one mode, more than one mode, or no mode at all. A number set may have just one mode, more than one mode, or no mode at all. Find the mode of: Find the mode of: 82, 91, 95, 101, 95, 84, 89, 89 _________ 82, 91, 95, 101, 95, 84, 89, 89 _________