Lets try a practice problem with looking at a graph of this concept.
State with each one,
if it has a high bias, high variablity or neither.
(answers are at the
end of this page.)
Main Idea
The main idea with this section is
the idea of taking many samples and then making data and histograms with
that data.
For instance you count the number
of green M&Ms in a bag. You do this several times and take those
numbers and plot them in a histogram. So you have two bags
with six. Four bags with eight and so on. This making a histogram,
which will allow you to see patterns and understand where true mean average
is and to see if there is anything wrong with your experiment by looking
for variablity and bias.
Answers: A) high bias and high
variablity. B) Good data! C) High Variablity D) High Bias
Go back
to the chapter home page