- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 8. Hypothesis Testing
- Subject 9. Tests Concerning Differences between Means with Dependent Samples
CFA Practice Question
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
Correct Answer: C
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 |