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Data Investigation Worksheet
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Data Investigation Worksheet
Read each question carefully. Show your working for calculations. Use the frequency table where indicated.
Plan a Statistical Investigation
1.Which question is most likely to produce a range of answers from students in a Year 7 group?
- What colour is the classroom door?
- How long does each student spend travelling to school?
- How many windows are in the library?
2.For the investigation question “How many minutes does each student travel to school?”, what is the variable being recorded?
- The number of travel minutes
- The name of the school
- The day of the week
3.Choose every sensible ethical practice for a class survey.
- Let students decide whether to take part
- Publish each person's response alongside their name
- Keep individual answers confidential
- Use considerate, non-intrusive questions
4.Write an investigative question suitable for a survey of students at your school. Make clear what you would measure and which group you would ask.
5.Match each statistical term to its definition.
- A. Mean
- B. Median
- C. Mode
- D. Range
- 3. The total of the values divided by how many values there are
- 1. The difference between the greatest and least values
- 4. The middle value after the data are ordered
- 2. The value that occurs most often
Calculate and Explain
Reading hours
Number of students
1
1
2
2
3
3
4
2
5
2
6
1
8
1
6.Calculate the mean number of reading hours for the 12 students. Show your calculation.
7.Find the median reading time. Remember to consider how many data values there are.
8.State the mode of the reading-hours data and explain how you know.
9.Work out the range of the reading-hours data. Include the subtraction you use.
10.In one or two sentences, describe what the mean suggests about the students’ weekly reading time.
11.Suggest one change to improve the reliability of a future investigation into students’ weekly reading time. Explain how it would help.
3 printable pages
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Page 2
Page 3
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