Y9 Keywords Examples

Question 1

Accuracy

Answer 1

The accuracy of a measurement is how close a result comes

to the true value.

Question 2

What does the accuracy of each measurement depend on?

Answer 2

quality of the 
measuring apparatus and the skill of the scientists taking the 
measurement. 
-quality
-skill

Question 3

Precision

Answer 3

how consistent results are when measurements are

repeated.

Question 4

For results to be precise/reliable

Answer 4

the variation within the values has to

be very small.

Question 5

example : 4 arrows shot towards a target.

They all landed near each other; however, far of centre.

Answer 5

Precise

Inaccurate

Question 6

Repeatability

Answer 6

A measurement is repeatable if the same person repeats the
experiment using same method and same equipment and it gives the same results.
-same person
-same method
-same equipment
=same results

Question 7

Reproducible results

Answer 7

A measurement is reproducible if another person using different equipment/method gets the same results.
-different person
-different equipment 
-different method 
=same results

Question 8

Anomalous results

Answer 8

Results which don’t follow the common pattern
Commonly found in line graphs - if so do not include in the

-do not include when calculating averages