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Statistics Data Analysis Worksheet
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Statistics Data Analysis Worksheet
📊 Part 1: Analysing Data
Data Set: Heights (in centimetres) of Year 7 students in a class:
145, 148, 150, 151, 152, 153, 154, 155, 155, 156, 157, 158, 159, 160, 161, 162, 163, 165, 167, 185
1. Identify any outliers in this data set. Explain your reasoning.
2. Describe the shape of this distribution:
Symmetrical
Positively skewed (right tail)
Negatively skewed (left tail)
3. What is the range of this data set? Show your working.
4. Calculate the mean height. Round to the nearest centimetre.
📈 Part 2: Creating Data Displays
5. Create a frequency table for the height data using intervals of 5cm (e.g., 145-149, 150-154, etc.).
6. Draw a dot plot for the height data in the space below:
7. Using your frequency table from question 5, sketch a column graph below:
🔍 Part 3: Interpreting and Presenting Findings
8. Identify and describe any clusters in the data:
9. Are there any gaps in the data? If so, describe where they occur:
10. Write a summary paragraph describing the key features of this height data. Include information about the centre, spread, shape, and any unusual features:
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