Question

Four people weigh a standard mass of 10.00 g on the same balance. The first person obtains a reading of 12.00 g, the second person reads 9.14 g, the third person reads 10.33 g, and the fourth person reads 12.55 g. These readings suggest the balance is


Precise

Accurate

Neither accurate nor precise

Accurate and precise


I think it is precise. I am having the hardest time with this. Can someone please help.

Answer 1

It should be neither. :) The average of the data is actually 11.005.

Answer 2

I really don't even know under what circumstances it could be "precise," since there's only one data as the outcome.

Answer 3

Are you sure because I cannot afford to lose any points right now.

Answer 4

I'm quite sure. Is this Connections Academy?

Answer 5

Laurel Springs actually haha

Answer 6

Alright! Well yeah! I'm certain! :D

Answer 7

Thank you so much!

Answer 8

Can you help me with something else really fast?

Answer 9

Sure :)

Answer 10

The question is which of the following is an example of measurement bias?


A stopwatch is accurate to 1/100th of a second for each measurement.

A stopwatch measures with a measurement interval of ±0.05 seconds in one day.

A stopwatch cannot duplicate a measurement of precisely 3.00 seconds.

A stopwatch must be calibrated before each use.

Answer 11

I think it is b but idk

Answer 12

It's C. It means that it's not accurate, so if something took EXACTLY 6 seconds, then it would be off.

Answer 13

I actually put that as my answer last time and it said it was wrong :(

Answer 14

Hm...

Answer 15

So, if that was incorrect, I feel the next best answer would be B like you said. :)

Answer 16

I think so too... Ugh, this is so confusing for me. You don't think it would "A stopwatch must be calibrated before each use."?

Answer 17

That would really depend on what it would be used for. If you needed to keep using it, one time after another, then it would be D, but it doesn't specify what it would be used for...

Answer 18

So we KNOW it's not A or C.

Answer 19

I'd have to agree that it'd be B as well.

Answer 20

Ok, thank you guys so much.

Answer 21

No problem! :)

Answer 22

Could I ask one more question... I am pretty sure about this one but I want to make sure

Answer 23

Go for it

Answer 24

Which ruler will produce a more accurate measurement?


Wooden ruler

Plastic ruler

Metal ruler

Cloth tape measure

Answer 25

I think it is metal

Answer 26

I'd say Metal as well.

Answer 27

Yay! I really appreciate your input. Thank you