Z-Scores and Percentiles: Crash Course Statistics #18
Today we're going to talk about how we compare things that aren't exactly the same - or aren't measured in the same way. For example, if you wanted to know if ...
==========
Hi, I’m Adriene Hill, and Welcome back to Crash Course, Statistics. One thing that statistics are good for comparing. You can compare your GPA with the mean or median GPA, and you can use the standard deviation to figure out whether the amount of time that people spend on social media everyday is pretty similar, or whether people differ a lot. But both these examples are comparing apples to apples. And sometimes we want to compare things that aren’t exactly the same, or aren’t measured in the same way. This is where standardization comes in. For example some prospective college students took the SAT, some the ACT and others both. How can we compare things that aren’t the same? It’s like comparing apples to grapefruit. INTRO Say there are two students who are applying for ad...
==========
Hi, I’m Adriene Hill, and Welcome back to Crash Course, Statistics. One thing that statistics are good for comparing. You can compare your GPA with the mean or median GPA, and you can use the standard deviation to figure out whether the amount of time that people spend on social media everyday is pretty similar, or whether people differ a lot. But both these examples are comparing apples to apples. And sometimes we want to compare things that aren’t exactly the same, or aren’t measured in the same way. This is where standardization comes in. For example some prospective college students took the SAT, some the ACT and others both. How can we compare things that aren’t the same? It’s like comparing apples to grapefruit. INTRO Say there are two students who are applying for ad...
