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For fun. Review. Notes. Questions. Examples. Two-Way Tables. Back. Back. Daniel conducts an offset survey to sketch a diagram, ABCD, of a block of land. Daniel walks from A to C, a distance of 62m. When he is 15 m from A, he notes that point D is 25 m to his right.

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Review

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  1. For fun Review Notes Questions Examples Two-Way Tables

  2. Back Back Daniel conducts an offset survey to sketch a diagram, ABCD, of a block of land. Daniel walks from A to C, a distance of 62m. When he is 15 m from A, he notes that point D is 25 m to his right. When he is 57 m from A, he notes that point B is 20 m to his left. This is his notebook entry. C 62 B 20 57 15 25 D 0 A a) Draw a neat sketch of the block of land. Label A, B, C and D on your diagram. b) Calculate the distance from C to D. (Give your answer to the nearest metre.) CD2 = 472 + 252 = 2834 CD = 53.235326.... CD ≈53m

  3. Back Back Two-way tables are used to compare two characteristics - for example, gender and health.

  4. Back Back A National Health Survey in 1995 compared the number of adults in a population who exercised regularly to those who didn't. The data is displayed in a two-way table. a) How many people were surveyed? b) What percentage of the people surveyed were female? Give your answer correct to 1 decimal place. c) What percentage of females exercised regularly? d) What percentage of the population did not exercise regularly? e) Comment on the statement 'Men and women are similar in their exercise habits'. Number of people surveyed = 3028 + 1532 + 1804 + 946 = 7310 Number of females = 1804 + 946 = 2750 Percentage of people who were female = 2750 x 100 = 37.6% 7310 Percentage of females who exercised = 1804 x 100 = 65.6% 2750 Percentage of people who did not exercise = 1532 + 946 x 100 = 33.9% 7310 Number of males = 3028 + 1532 = 4560 Percentage of males who exercised = 3028 x 100 = 66.4% 4560 Since the percentage of females who exercised was 65.6% and the percentage for males was 66.4%, there is no significant difference, so the statement is supported by this data.

  5. Back Back Complete 4-07 questions 1-4

  6. Back Back 3+5=8

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