Please can you help me (Probability)
posted by Fakaapo. Suetusi .
Whether multiplying the same number to each value in the data set will affect its variance, please can you gave me an example.
Thank you for your help.
Please can you help me (Probability) -
Suppose the dataset is:
sum of squares=∑x^2=165
If all the numbers in the dataset are multiplied by 2:
sum of squares=∑x^2=660
What can you say about the effect on variance of multiplying the dataset by a constant?