00:01
Hello, so i'm going to answer your question about a experimental design.
00:06
So the first question they tell you why you should use a control group.
00:10
It is that you want to understand what is the effect of our cavalry program.
00:14
So the control group will allow you to have a benchmark to compare if a and b is effective, but not to compare a and b between each other.
00:23
So this will set the benchmark of no treatment.
00:26
And then you can start deciding with the difference between the control and each program.
00:32
What is the result? i think it's easier when you, i explain the question b when you understand better what is the block design.
00:39
So what is the block design that you are supposed to take? so if it's a block design, what you are going to say is, okay, i'm going to divide my group of students into the one that.
00:49
First i'm going to measure what is the effect of plan a.
00:51
So i take the control and then i apply the treatment a.
00:56
And for the plan b, i'm going to do the same thing.
00:58
I'm going to control and then find the treatment.
01:01
With this i'm going to find the difference.
01:03
So this will be the difference for b and this will be the difference for a...