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A group of people were asked to vote for their favourite British film of all time from a selection of six taken from the the BFI top 100. The following bar chart shows the results of the survey.

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", "advice": "

Click \"Show Steps\" above to see how to answer this question.

", "rulesets": {}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"percentage": {"name": "percentage", "group": "Ungrouped variables", "definition": "precround((freq2/49)*100,0)", "description": "", "templateType": "anything", "can_override": false}, "film1": {"name": "film1", "group": "Ungrouped variables", "definition": "random([\"The Third Man\",\"Brief Encounter\", \"Lawrence of Arabia\", \"The 39 Steps\", \"Great Expectations\",\"Kes\"])", "description": "", "templateType": "anything", "can_override": false}, "film2": {"name": "film2", "group": "Ungrouped variables", "definition": "random([\"The Third Man\",\"Brief Encounter\", \"Lawrence of Arabia\", \"The 39 Steps\", \"Great Expectations\",\"Kes\"] except film1)", "description": "", "templateType": "anything", "can_override": false}, "freq2": {"name": "freq2", "group": "Ungrouped variables", "definition": "switch(film2=\"The Third Man\",15,film2=\"Brief Encounter\",4,film2=\"Lawrence of Arabia\",13,film2=\"The 39 Steps\",8,film2=\"Great Expectations\",3,film2=\"Kes\",7,0)", "description": "", "templateType": "anything", "can_override": false}, "freq1": {"name": "freq1", "group": "Ungrouped variables", "definition": "switch(film1=\"The Third Man\",15,film1=\"Brief Encounter\",4,film1=\"Lawrence of Arabia\",13,film1=\"The 39 Steps\",8,film1=\"Great Expectations\",3,film1=\"Kes\",7,0)", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["film1", "film2", "freq1", "freq2", "percentage"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "gapfill", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "

How many people voted for {film1}?

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Answer: [[0]]

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", "stepsPenalty": 0, "steps": [{"type": "information", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "

Find the bar for {film1}. Use the scale on the Y-axis to find how many people voted for it.

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How many people voted for either {film1} or {film2}?

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Answer: [[0]]

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What percentage of people surveyed voted for {film2}?

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Answer: [[0]]

", "stepsPenalty": "1", "steps": [{"type": "information", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "

To find an exact percentage, if $n$ is the number of votes for {film2}, then you need to calculate

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$\\frac{n}{\\text{total # of votes}} * 100$

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Since there are 50 votes in total, you will be able to simplify this and give your answer as a whole number.

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