4) An ice-cream van sells a range of different ice-creams for 2 weeks. This is the number of ice-creams he manages to sell. Find the mean, median, mode and range of his ice-cream sales. \( 87,75,95,102,109,61,85 \) Week \( 2: 77,103,102,79,82,63,70 \) Mean Median

We first combine the sales figures from both weeks: Week 1: 87, 75, 95, 102, 109, 61, 85 Week 2: 77, 103, 102, 79, 82, 63, 70 Step 1: Calculate the Mean • Add all the numbers:   Week 1 sum = 87 + 75 + 95 + 102 + 109 + 61 + 85 = 614   Week 2 sum = 77 + 103 + 102 + 79 + 82 + 63 + 70 = 576   Combined sum = 614 + 576 = 1190 • There are 14 data points (7 from each week). • Mean = 1190 ÷ 14 = 85 Step 2: Find the Median • First, sort all 14 numbers in ascending order:   61, 63, 70, 75, 77, 79, 82, 85, 87, 95, 102, 102, 103, 109 • Since there is an even number of values (14), the median is the average of the 7th and 8th numbers. • 7th number = 82; 8th number = 85   Median = (82 + 85) ÷ 2 = 83.5 Step 3: Determine the Mode • The mode is the number that appears most frequently. • Here, 102 appears twice while all other values appear only once. • Mode = 102 Step 4: Compute the Range • Range = Largest value − Smallest value • Largest value = 109; Smallest value = 61   Range = 109 − 61 = 48 Summary: • Mean = 85 • Median = 83.5 • Mode = 102 • Range = 48