The standard deviation is a measure that indicates the extent to which the peaks and troughs of a wave differ on average from the mean voltage. A large standard deviation is a measure of large amplitude waves, i.e., on average the peaks and troughs differ by a large extent from the mean voltage.
The weighted average formula is used to calculate the average value of a particular set of numbers with different levels of relevance. The relevance of each number is called its weight. The weights should be represented as a percentage of the total relevancy. Therefore, all weights should be equal to 100%, or 1.
To average these values, do a weighted average by using the number of occurrences of each value as the weight. To calculate a weighted average, do the following: Step 1: Multiply each value by its weight.(Answer: 20, 16, 5, 40, 24, 14, 68, and 0.) Step 2: Total all the values from Step 1. (Answer: sum = 187.) Step 3: Total the occurrences (weights).o average these values, do a weighted average by using the number of occurrences of each value as the weight. To calculate a weighted average, do the following: Step 1: Multiply each value by its weight.