scatter diagram

Question 1

interpolation

Answer 1

is within range of data so is more likely to be accurate

Question 2

extrapolation

Answer 2

30 weeks is outside the range of the data so is less likely to be accurate

Question 3

is it suitable or not

Answer 3

weather it is the right way round

so for exmaoke you should not use this model too product a value if x for a value of y

Question 4

give an interpretation of the value

Answer 4

If the number of items increases by 1 , the time taken increases by approximately 2.64 minutes