Chucky grabbed 11 items in the grocery store. Each item had a different price, and the mean was about $4.44. On his way to the register, he added a 12th item: a jug of olive oil for $39.99. [show data].How will adding the jug of olive oil affect the mean and median?Choose 1 answer:(A) Both the mean and median will increase, but the median will increase by more than the mean.(B) Both the mean and median will increase, but the mean will increase by more than the median.(C) The mean will increase, and the median will decrease.(D) The median will increase, and the mean will decrease.
Q. Chucky grabbed 11 items in the grocery store. Each item had a different price, and the mean was about $4.44. On his way to the register, he added a 12th item: a jug of olive oil for $39.99. [show data].How will adding the jug of olive oil affect the mean and median?Choose 1 answer:(A) Both the mean and median will increase, but the median will increase by more than the mean.(B) Both the mean and median will increase, but the mean will increase by more than the median.(C) The mean will increase, and the median will decrease.(D) The median will increase, and the mean will decrease.
Calculate Total Cost: Calculate the original total cost of the 11 items before adding the jug of olive oil.Since the mean price of the 11 items is $4.44, we can find the total cost by multiplying the mean by the number of items.Total cost = Mean price × Number of itemsTotal cost = $4.44×11Total cost = $48.84
Calculate New Total Cost: Calculate the new total cost after adding the jug of olive oil.We add the price of the jug of olive oil to the original total cost to find the new total cost.New total cost = Original total cost + Price of olive oilNew total cost = $48.84 + $39.99New total cost = $88.83
Calculate New Mean Price: Calculate the new mean price after adding the jug of olive oil.The new mean price is the new total cost divided by the new number of items, which is 12.New mean price = New total cost / New number of itemsNew mean price = $88.83/12New mean price ≈$7.40
Effect on Median: Determine the effect on the median after adding the jug of olive oil.Since the original number of items was 11 (an odd number), the median was the price of the 6th item when arranged in ascending order. After adding the 12th item, the median will be the average of the 6th and 7th items' prices. If the jug of olive oil is more expensive than at least six of the original items, it will not affect the median because it will be the new highest price, and the median will be the average of the original 6th and 7th items' prices. However, since we do not have the individual prices of the original items, we cannot determine the exact median but can infer that it will either stay the same or increase.
Choose Correct Answer: Choose the correct answer based on the calculations.From Step 3, we know that the mean will increase from $4.44 to approximately $7.40. From Step 4, we know that the median will either stay the same or increase, but not decrease. Therefore, the correct answer is that both the mean and median will increase, but the mean will increase by more than the median because the addition of the jug of olive oil significantly increases the total cost, which has a greater effect on the mean than on the median.