00:01
Which of these statements is not true regarding the range? so we have four statements here.
00:06
Let's assess them.
00:08
And i'm going to start with d, because this describes how you find the range, and it's true.
00:13
So we'll cross it out.
00:15
You do get the range by taking the maximum value in your dataset and subtracting the minimum value.
00:24
Moving on to b, is the range the measure of spread that is easiest to calculate? yes, it is.
00:30
Other measures of spread involve the interquartile range or the standard deviation or variance.
00:38
These are more complicated to calculate.
00:42
For the interquartile range, you need to find the quartiles, and it's the difference between the third quartile and the first quartile.
00:49
Standard deviation has this big formula where you take a value, you subtract the mean, i'll do the entire, i'll do a population, so mu, you square the difference, you add them all up, you divide by the number of pieces of data, you square root, it's a lot more work.
01:05
The range is much easier.
01:08
What about c? there's no statistical symbol for the range, and the example it gives is a sample mean is x bar.
01:16
So c is also true...