The concept of variance is used to measure how widely the data points in a set are scattered from the average. The process involves finding the difference of each data point from the average, squaring these differences, adding them up, and then dividing by the total number of data points. A high variance suggests a broad spread of data, while a low variance signifies that the values are clustered closely together.
| Topic | Problem | Solution |
|---|---|---|
| None | Given the data set {2, 4, 6, 8, 10}, calculate th… | Step 1: Calculate the mean (average) of the data set. The mean is given by the sum of all numbers i… |
| None | $\leftarrow$ Save \& Exit Certify Lesson: 4.2a Me… | Calculate the mean (average) of the data set: \(\frac{9+1+4+15+7+6}{6} = 7.0\) |