00:01
Okay, so for this problem that you need help with, it says for any two categorical values, variables, x and y, the best way to determine if they are related is to, a, calculate the correlation between x and y, draw a scatter plot of x and y values, or make a two -way table of x and y values, or all of the above.
00:24
I'm going to say you are going to make, or i'm sorry, draw a scatter plot of x and y values.
00:32
Making a two -way table, you would need more information than just x and y.
00:36
And calculating the correlation, you would need to draw the scatter plot first to see the correlation, whether there's positive, negative, or no correlation.
00:47
The letter grades given in a course are one of a, b, c, d, or f.
00:53
This grading scale is an example of and is it a nominal scale an ordinal scale a responsive scale or an interval scale so i have this um visual and so a lot of people might get it confused with ordinal or interval scales and i love this because an ordinal scale you can order it has a frequency but it only talks about the mode and the median and for an interval scale, you'll need the mean.
01:29
And you'll need to quantify the difference between each value, add or subtract values, multiply, i'm sorry, add or subtract values...