IB MYP 4-5 Maths- Response rates- Study Notes - New Syllabus
IB MYP 4-5 Maths- Response rates – Study Notes
Standard
- Response rates
Response Rates
Response Rates
Response rate refers to the proportion of people who respond to a survey or questionnaire out of the total number of people contacted. It is an important measure of the quality and reliability of survey data.
\( \text{Response Rate} = \dfrac{\text{Number of Responses}}{\text{Number of People Contacted}} \times 100\% \)
Key Points:
- A higher response rate generally indicates more reliable data.
- Low response rates can lead to non-response bias, making results less representative.
- Methods to improve response rate:
- Sending reminders
- Keeping surveys short and simple
- Offering incentives
Example:
A company sends out 500 feedback forms and receives 400 responses. Find the response rate.
▶️Answer/Explanation
Step 1: Number of responses = 400, Number contacted = 500.
Step 2: Response rate = \( \dfrac{400}{500} \times 100\% = 80\% \).
Answer: The response rate is 80%.
Example:
A teacher emails a survey to 120 students, but only 72 reply. Calculate the response rate and suggest one way to improve it.
▶️Answer/Explanation
Step 1: Number of responses = 72, Number contacted = 120.
Step 2: Response rate = \( \dfrac{72}{120} \times 100\% = 60\% \).
Suggestion: Send reminders or offer a small incentive to increase participation.