Question

I need help! :|

What kind of relationship does this table describe?

Figure in comments! Thx. :)

Answer 1

@jim_thompson5910 Remember me? Help me out? ;)

Answer 2

Are you given a list of choices? This question seems a bit vague.

Answer 3

Yeah, I don't even know why there are statistics questions like this in my Geometry course >.<

Answer 4

yeah that is strange

Answer 5

The options are:

1. This table is an example of the principle of independence.
2. This table is not an example of the principle of independence.
3. There is not enough information to answer this question.

Answer 6

Ok let's set up some notation

let A = person has a membership, B = person attends one or more classes

Answer 7

All of these questions are very vague and even opinionated >.< Seems so silly to me. Look at this one! It asks me if it's fair..

Answer 8

well hold on, we're still on the last one

Answer 9

with
A = person has a membership, B = person attends one or more classes

we can say

P(A) means the probability of someone having a membership
P(B) the probability a person attends one or more classes

Answer 10

Yeah, I'm just saying. :p Ok so a = membership b = attends classes

Answer 11

what is P(A and B) equal to?

Answer 12

It's equal to...... idk.

Answer 13

how many people have a membership AND attend one or more classes

Answer 14

17?

Answer 15

this is out of 70 people in total, so P(A and B) = 17/70

Answer 16

now what is P(A) equal to?

Answer 17

23/70

Answer 18

A is the event that someone having a membership

Answer 19

how many people have a membership

Answer 20

oh. 40/70

Answer 21

now compute P(B)

Answer 22

39/70?

Answer 23

B = person attends one or more classes

so look in the bottom row of the column that says "attends one or more classes"

Answer 24

Oh I'm sorry >.< 31/70

Answer 25

now if events A and B were independent, then

P(A and B) = P(A) * P(B)

however,

P(A and B) = P(A) * P(B)

17/70 = (40/70)*(31/70)

0.24285714285714 = 0.2530612244898


So the equation is false. This means that events A and B are NOT independent. So they are dependent events.

Answer 26

Interesting.. That was quite the question o.O Thx for the help :)

Answer 27

you're welcome

Answer 28

Did you look at the other one? it's a ridiculous question >.<

Answer 29

Yeah I'm looking at it now, and still thinking

Answer 30

Well here's the dilemma: to be "fair" means everyone gets an equal shot. So does that mean everyone gets the same number of ping pong balls (regardless of how bad/good they play)? Or do you skew it to favor those who struggled and played poorly?

If you skew it, how do you skew it? How do you quantitatively alter the playing field to make things more fair.

Sadly I'm not sure of these questions. I think some skewing needs to happen but I don't know how much. You definitely don't want to go too far and end up over-favoring the bad teams.

Answer 31

Yeah, isn't that a weird question? Like how am I suppose to answer that >.<

Answer 32

agreed, and I'm not really great with sports statistics or anything

Answer 33

Oh well. Thx for the help though :P I'll figure it out.

Answer 34

and to make matters worse, idk how they're getting 250, 199, etc etc

those numbers seem arbitrary

Answer 35

exactly. maybe it is just a "trick" question kind of. The answer is just no because it betrays the definition of "fair"... Who knows..

Answer 36

In terms of pure statistics, the answer could be "no" since not all teams in the draft have the same number of ping pong balls. But idk 100%