Seeing is believing!
Before you order, simply sign up for a free user account and in seconds you'll be experiencing the best in CFA exam preparation.
Basic Question 1 of 3
The standard deviation, σ(x-bar1 - x-bar2), of the sampling distribution is also referred to as the ______.
B. variance
C. standard error
A. mean
B. variance
C. standard error
User Contributed Comments 3
| User | Comment |
|---|---|
| robkaz | I thought standard error was sigma divided by square root of n? |
| sally | The standard error of a statistic is the standard deviation of the sampling distribution of that statistic. In this case, the statistic is x-bar1 - x-bar2. What you refered to, robkaz, is the standard error of the mean. |
| sgossett86 | im so mad i want to cry |
I just wanted to share the good news that I passed CFA Level I!!! Thank you for your help - I think the online question bank helped cut the clutter and made a positive difference.
Edward Liu
Learning Outcome Statements
construct hypothesis tests and determine their statistical significance, the associated Type I and Type II errors, and power of the test given a significance level
CFA® 2026 Level I Curriculum, Volume 1, Module 8.