Question

Normal distribution?

Answer 1

Are these correct

Answer 2

sounds statish ....

Answer 3

Statish indeed :(

Answer 4

define a data value ...

Answer 5

Data value is distance from the mean...raw score is original data value?

Answer 6

A data value is an element of a value domain.

the mean is a data value, and all the data collected from a survey are data value.

does a data value have to be between 0 and 1?

Answer 7

No, it can be less than or greater than..

Answer 8

I know that data values are concentrated around the mean, is that correct?

Answer 9

it sounds correct to me, but its not a precise definition. good enough tho

we can rule out the first one as well, cant we?

Answer 10

Yes..first one is incorrect...and last one. Data values concentrated around the mean, and would you think that as much data is on either end?

Answer 11

on second read, i dont think we can rule it out ...

within 1 sd of the mean the empirical rule gives us 64% which is well over 50% of the data

Answer 12

the mean is a measure of 50% of the data from the left; and from the right. so there is an equal amount of data on both sides of the mean

Answer 13

Okay, I'm certain of the middle two being correct

Answer 14

68% of the data is within 1sd of the mean ... had a 34% to the left and 34% to the right competing to get out :)

Answer 15

So 50% is within that SD of 68%?

Answer 16

Or 50% is not within one SD being that it's 34%? Sorry just got confused :)

Answer 17

Oh...50% would be within 1 SD of the mean because it being 68% so the first is also correct?