Im really stressed =[
I have started my Business IT degree at Uni and I have a module on 'Statistics and Data Analysis' for the first Semester.
I just have to get past this exam and then I dont have to worry about it again!
The problem is though, although I did really well on my GCSEs I done very badly in Maths. My ALevels did not consist of anymaths at all so its been a while!
I'm struggling so much with Standard Deviation.
The teacher has given me the typical equation, but he has (n-1) underneith the equation.
When I look online I cant find why he has this.
It just has n on the normal standard deviation equation.
Can someone tell me if n always equals to 10? or does it equalto the number of values you have?? As all of the practice questions state n as 10.
I have explained to my lecturer that i need extra support but our class is too big so he has no tmie to fully explain things to me..
Can anyone help? x