Two-way tables

Mark scheme and answers · Total marks: 85

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Question 1 [3 marks]

Men: Tea 50, Coffee 40, Juice 0, Total 90; Women: Tea 40, Coffee 30, Juice 40, Total 110; Juice total 40.

Question 2 [2 marks]

25 girls chose tennis.

Question 3 [3 marks]

Male: Comedy 45, Action 45, Horror 20, Total 110; Female: Comedy 55, Action 35, Horror 40, Total 130; Horror total 60.

Question 4 [2 marks]

25 adults chose city.

Question 5 [3 marks]

Male: Fiction 70, Non-fiction 45, Magazines 45, Total 160; Female: Fiction 50, Non-fiction 55, Magazines 35, Total 140; Magazines total 80.

Question 6 [4 marks]

25 students went to Maths on Saturday.

Question 7 [4 marks]

25 year 10 students like physics best.

Question 8 [4 marks]

13 girls study Spanish.

Question 9 [4 marks]

0.11 or 11100

Question 10 [4 marks]

102 girls walk to school.

Question 11 [2 marks]

30 women use bike.

Question 12 [3 marks]

Male: Italian 45, Chinese 30, Mexican 15, Total 90; Female: Italian 35, Chinese 40, Mexican 35, Total 110; Mexican total 50.

Question 13 [2 marks]

25 men prefer cycling.

Question 14 [3 marks]

Male: Dog 50, Cat 40, Fish 20, Total 110; Female: Dog 40, Cat 30, Fish 20, Total 90; Totals: Dog 90, Cat 70, Fish 40, Total 200

Question 15 [2 marks]

20

Question 16 [3 marks]

Men: Tea 35, Coffee 35, Juice 10, Total 80; Women: Tea 45, Coffee 25, Juice 30, Total 100; Totals: Tea 80, Coffee 60, Juice 40, Total 180

Question 17 [2 marks]

20

Question 18 [3 marks]

Adults: Beach 40, Mountains 20, City 30, Total 90; Children: Beach 30, Mountains 30, City 10, Total 70; Totals: Beach 70, Mountains 50, City 40, Total 160

Question 19 [2 marks]

50

Question 20 [3 marks]

Boys: Pizza 50, Pasta 30, Salad 30, Total 110; Girls: Pizza 40, Pasta 40, Salad 10, Total 90; Totals: Pizza 90, Pasta 70, Salad 40, Total 200

Question 21 [2 marks]

20

Question 22 [3 marks]

Children: Vanilla 45, Chocolate 25, Strawberry 10, Total 80; Adults: Vanilla 35, Chocolate 35, Strawberry 30, Total 100; Total Strawberry = 40

Question 23 [2 marks]

40 male students prefer listening

Question 24 [3 marks]

Men: Roses 25, Tulips 25, Daisies 20, Total 70; Women: Roses 35, Tulips 25, Daisies 20, Total 80; Total Daisies = 40

Question 25 [2 marks]

10 adults chose biography

Question 26 [3 marks]

Male: Swimming 40, Running 20, Cycling 30, Total 90; Female: Swimming 30, Running 30, Cycling 10, Total 70; Total Cycling = 40

Question 27 [3 marks]

Yoga total = 180 - 70 - 60 = 50. Female swimmers = 70 - 40 = 30. Female gym = 35. Female yoga = 100 - 30 - 35 = 35. Male total = 180 - 100 = 80. Male gym = 60 - 35 = 25. Male yoga = 50 - 35 = 15. Male swimming = 40. Table: Male: 40, 25, 15, 80; Female: 30, 35, 35, 100; Total: 70, 60, 50, 180.

Question 28 [3 marks]

Classical total = 250 - 100 - 80 = 70. Male pop = 55, so female pop = 100 - 55 = 45. Female rock = 45, so male rock = 80 - 45 = 35. Total males = 120, so male classical = 120 - 55 - 35 = 30. Female classical = 70 - 30 = 40.

Question 29 [3 marks]

Science total = 200 - 80 - 70 = 50. Girls in Maths = 45, so boys in Maths = 80 - 45 = 35. Boys in English = 30, so girls in English = 70 - 30 = 40. Total boys = 90, so boys in Science = 90 - 35 - 30 = 25. Girls in Science = 50 - 25 = 25. Total girls = 200 - 90 = 110. Table: Boys: 35, 30, 25, 90; Girls: 45, 40, 25, 110; Total: 80, 70, 50, 200.

Question 30 [3 marks]

Sweets total = 300 - 120 - 100 = 80. Adult popcorn = 70, so child popcorn = 120 - 70 = 50. Child nachos = 55, so adult nachos = 100 - 55 = 45. Total children = 140, so child sweets = 140 - 50 - 55 = 35. Adult sweets = 80 - 35 = 45.