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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 am using your study notes and I know of at least 5 other friends of mine who used it and passed the exam last Dec. Keep up your great work!
Barnes
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® 2025 Level I Curriculum, Volume 1, Module 8.