The table gives information about the lengths, in cm, of some pieces of string - Edexcel - GCSE Maths - Question 6 - 2022 - Paper 3
Question 6
The table gives information about the lengths, in cm, of some pieces of string.
Length (cm) Frequency
0 < l ≤ 10 15
10 < l ≤ 20 20
20 < l ≤ 30 ... show full transcript
Worked Solution & Example Answer:The table gives information about the lengths, in cm, of some pieces of string - Edexcel - GCSE Maths - Question 6 - 2022 - Paper 3
Step 1
Mistake 1: Incorrect Last Point on Polygon
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The last point plotted on the frequency polygon is incorrect; it should represent the frequency for the interval '40 < l ≤ 50', which is 5, but Amos did not plot it at the correct position of 45 on the horizontal axis.
Step 2
Mistake 2: Wrong Intervals on Vertical Axis
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The vertical axis does not increase in the same intervals. For instance, it should consistently increase by equal intervals (e.g., increments of 10) rather than uneven gaps that lead to confusion in interpreting the data.
