Photo AI
A store carries out a satisfaction survey on a sample of its customers - OCR - GCSE Maths - Question 3 - 2023 - Paper 2
Question 3
A store carries out a satisfaction survey on a sample of its customers. The bar chart shows the results. (a) Work out how many customers were in the sample. (b) Th... show full transcript
Worked Solution & Example Answer:A store carries out a satisfaction survey on a sample of its customers - OCR - GCSE Maths - Question 3 - 2023 - Paper 2
Step 1
Work out how many customers were in the sample.
Answer
To find the total number of customers surveyed, we need to extract the values from the bar chart for each satisfaction category:
- Very satisfied: 24 customers
- Satisfied: 16 customers
- Dissatisfied: 8 customers
Now, we add these values together:
Thus, the total number of customers in the sample is 48.
Step 2
Complete the final row of the pictogram and the key.
Answer
In the pictogram, we need to represent the satisfaction levels with symbols. Let's define the value of one symbol:
From the total of 48 customers:
- Total symbols needed for 'Very satisfied' = 24 customers: 24 / 4 = 6 symbols.
- Total symbols needed for 'Satisfied' = 16 customers: 16 / 4 = 4 symbols.
- Total symbols needed for 'Dissatisfied' = 8 customers: 8 / 4 = 2 symbols.
Therefore, the final row of the pictogram and the key will look like this:
Very satisfied 🟡🟡🟡🟡🟡🟡
Satisfied 🟡🟡🟡🟡
Dissatisfied 🟡🟡
Key: 🟡 represents 4 customers.