// Create a subset of data on how contestants chose compared to their estimated age function generateSubset_Age(dataset) { // Create data structure framework let subset = { counts: [ {name: "<25 years", outcome: {splits: 0, steals: 0}}, {name: "25-29 years", outcome: {splits: 0, steals: 0}}, {name: "30-34 years", outcome: {splits: 0, steals: 0}}, {name: "35-39 years", outcome: {splits: 0, steals: 0}}, {name: "40-44 years", outcome: {splits: 0, steals: 0}}, {name: "45-49 years", outcome: {splits: 0, steals: 0}}, {name: "50-54 years", outcome: {splits: 0, steals: 0}}, {name: "55+ years", outcome: {splits: 0, steals: 0}}, ], percentages: [ {name: "<25 years", value: 0}, {name: "25-29 years", value: 0}, {name: "30-34 years", value: 0}, {name: "35-39 years", value: 0}, {name: "40-44 years", value: 0}, {name: "45-49 years", value: 0}, {name: "50-54 years", value: 0}, {name: "55+ years", value: 0}, ], }; // Loop through each contestant let bracketAgeIncrement = 5; // Width of age brackets for(let i = 0; i < dataset.length; i++) { let ageCutoff = 25; // Upper limit of the age bracket, exclusive let bracketFound = false; // Boolean check for the final age bracket, which is >5 years (55+) // Determine which choice the contestant made // and use it as a field recerence to counts[i].outcome let choice = dataset[i].splitOrSteal == 'Split' ? 'splits' : 'steals'; // Check for each age bracket <25, <30, <35, etc. up to <55 (but NOT <60, since it will be 55+) for(let j = 0; j < subset.counts.length - 1; j++) { if(dataset[i].ageEstimate < ageCutoff) { // j is indexed to the correct age bracket subset.counts[j].outcome[choice]++; // Escape the for-loop to prevent unnecessary extra checks bracketFound = true; break; } else { // Check the next age bracket ageCutoff += bracketAgeIncrement; } } // Check the final age bracket if(!bracketFound) { // The final age bracket is the correct age bracket subset.counts[subset.counts.length - 1].outcome[choice]++; } } // Process the counts into percentages for(let i = 0; i < subset.counts.length; i++) { let totalOutcomes = (subset.counts[i].outcome.splits + subset.counts[i].outcome.steals); subset.percentages[i].value = subset.counts[i].outcome.splits / totalOutcomes; } // Return the data structure return subset; }