i googled it, but still understood nothing 😛
What’s this thing??
In: Mathematics
You have a bunch of numbers – exam scores for example. Find the mean of these numbers (70). Are your scores all close to the mean or are they really far away (did most people score around 70 or did you have a lot of very low/high scores)? A 72 is two above average while a 68 is two below, but both are simply two points from the mean. The standard deviation tells us (roughly) the average difference from the mean for all of the scores. If you have a standard dev of 1, then people’s scores are on average 1 away from the mean exam scores. A higher standard deviation will imply that people’s the average difference is higher.
Latest Answers