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Exploring Data Videos 25 videos

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AP Statistics 5.1 Exploring Data. What does this information tell us about the data?

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AP Statistics 3.4 Exploring Data 6 Views


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Description:

AP Statistics 3.4 Exploring Data. Which of the following does not help us measure the spread of a set of data?

Language:
English Language

Transcript

00:04

And here's your shmoop du jour brought to you by a range like

00:08

Bruno Mars you may want to be careful if is too hot which of the following does [Bruno Mars singing and flames appear from his face]

00:13

not help us measure the spread of a set of data and here are the potential answers....

00:20

All right hey data feel free to spread out make yourself

00:24

comfortable well not that comfortable ..Anyway this problem gives

00:28

us five options and wants to know which won't help us determine the spread of [Man spreading butter onto a piece of bread]

00:33

data so one of them won't give us any indication of the highs and lows of a

00:37

set of values and we want to nail the guilty party...Well let's take a look at [Graph with lots of data plots in an interrogation room]

00:42

interquartile range first of all well the word itself should be a pretty good

00:46

clue inter quartile ie this measurement will tell us something about about

00:50

the values of between two quartiles in other words something about the spread anyone else [A restaurant in a and country crock appears]

00:55

suddenly having a craving for Country Crock... Okay next up standard

01:00

deviation while this tells us how widely the data is centered around the mean [Data circled around the mean]

01:06

which again gives us an idea of the spread of data points so we'll deviate away

01:11

from this one and keep looking option C is q1 and q3 otherwise known as the

01:16

first and third quartiles, well knowing just one of the two wouldn't do much for [Woman and man asking who he is]

01:20

us but as soon as we know the value of two distinct points we suddenly have

01:24

a sense of how the data is being divi'd out meaning we can nix this one as well

01:28

E; the range was probably the most obviously bad answer.. A range is clearly [Biker with the letter E on the front of his body]

01:34

going to tell us something about the range of data values... That's its name

01:39

range... We have to assume they weren't being tricky when they coined the term [Two men stood with a graph]

01:43

otherwise it would be like naming a pet duck, Whiskers you have to be a real [Duck on the grass with a name label Whiskers]

01:47

quack to do something like that so yeah it ain't range..Leaving us with answer

01:51

D median; well yeah a median is only a single point the middle value of an

01:56

entire set, it tells us nothing about the spread of data no more than the age of a [Children stood together on a front lawn]

02:01

middle child tells us anything about the ages of his older and younger brothers

02:04

although by looks of it, he's getting it from both sides. So D it is, now if you'll [boy kicked by older brother]

02:09

excuse us we're going to run before that uptown funk gives it to us we're not

02:13

sure what it is, but well we're positive we don't want to know...[Bruno Mars singing and a girl performing ballet]

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