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QUICK QUIZ! 1. 2. 3. 4. 5. What are the two main types of data? Categorical data can either be ordered or not. Which two words describe this? Give an example of numerical continuous data. Bar charts are different to histograms. Describe one difference. What are class intervals and why are they sometimes necessary? Complete Worksheet General Mathematics Commencement Holiday HW 1. Classify the following situations as categorical or numerical: a) A group of people write down their favourite colour ________________ b) Each student in a class is weighed in kilograms ________________ c) Each student in a class is weighed and then classified as “light”, “average” or “heavy” ________________ 2. The following responses were received to a question regarding the return of capital punishment. a) Complete the table below. b) How many people said “Strongly Agree”? ___ c) What percentage of people said “Strongly Disagree”? ___ d) What was the most frequent response? ___ e) Construct a bar chart of the frequencies in the field on the right. Attitude to capital punishment Strongly Agree Agree Don’t Know Disagree Strongly Disagree Total Frequency Count Percent 21 8.2 11 4.3 42 129 256 50.4 100. 3. A group of 28 students were asked to draw a line that they estimated to be the same length as a 30cm ruler. The results are shown in the frequency table below. a) How many students drew a line with a length of: i) from 29.0 to 29.9cm? ___ ii) less than 30 cm? ___ b) What percentage of students drew a line with a length of: i) from 31.0 to 31.9 cm? ___ ii) less than 31cm? ___ c) Use the table to construct a histogram using the counts. Length of line (cm) 28.0 – 28.9 29.0 – 29.9 30.0 – 30.9 31.0 – 31.9 32.0 – 32.9 33.0 – 33.9 Total Frequency Count Percent 1 3.6 2 7.1 8 28.6 9 32.1 7 25.0 1 3.6 28 100.0