In: Statistics and Probability
a. What is an example of when you would want consistent data and, therefore, a small standard deviation? b. What is an example of when you might want a large standard deviation? That is, data that is more spread out?
Answer:
1.(a). Consistency of data can be viewed in many ways .Typical measures of data consistency include statistics such as the range (i.e., the largest value minus the smallest value among a distribution of data), the variance (i.e., the sum of the squared deviations of each value in a distribution from the mean value in a distribution divided by the number of values in a distribution) and the standard deviation (i.e., the square root of the variance).
A data with small standard deviation is called a consistent data( in terms of standard deviation).
Example of consistent data:
1.(b). Example of data with high standard deviation: