Data Collection and Sampling Quiz
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5 questions, one answer each
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1. What is a sample?
- A. A) The entire group being studied
- B. B) A smaller group selected from the population
- C. C) A type of bar chart
- D. D) A measure of spread
2. 45 out of 180 people prefer 'blue'. What is the pie chart angle for 'blue'?
- A. A) 45°
- B. B) 90°
- C. C) 180°
- D. D) 25°
3. What goes on the horizontal axis of a time series graph?
- A. A) Frequency
- B. B) Time
- C. C) Category
- D. D) Percentage
4. What must a stem-and-leaf diagram always include?
- A. A) A pie chart
- B. B) A key explaining how to read the values
- C. C) A trend line
- D. D) A scale factor
5. A survey only asks students in one specific class about the whole school's opinions. What problem does this cause?
- A. A) The sample size is too large
- B. B) The sample may be biased and not represent the school
- C. C) It is a time series problem
- D. D) It requires a pie chart instead