Introduction to Statistics

Class Activity

For my final post, I'd like to talk about a recent class activity that was done in the area of statistical data, such as mean, median, mode, and standard deviation. Once again, we gathered data from the students within my class about the total dollars spent on textbooks for the semester. Using TI-73 calculators, we were able to run a statistical analysis of the data.

Originally, to find the mean, the costs of the textbooks would all have to be added and the sum would then be divided by the number of students in the classroom.

To find the median, the costs would be arranged from least to greatest and the number in the middle would be defined as the 'median'.

The most common cost of the textbooks would be considered as the mode. The common numbers, meaning the number was used twice or more.

The calculation for standard deviation is shown in the video below.