First, Ariana calculated the mean (average) rent. To find the mean, you add up all the rents and divide by the number of apartments:
Mean = (1,000 + 1,200 + 1,300 + 1,400 + 4,800) / 5
Mean = 8,700 / 5
Mean = 1,740
So, the mean rent for the 5 apartments is $1,740 per month.
Next, Ariana calculated the median rent. To find the median, you arrange the rents in ascending order and find the middle value:
The rents in ascending order: $1,000, $1,200, $1,300, $1,400, $4,800
The middle value is $1,300.
So, the median rent for the 5 apartments is $1,300 per month.
Ariana decided to remove the $4,800 rent from the set and recalculate the mean and median without it.
Without the $4,800 rent, Ariana now has 4 apartment rents: $1,000, $1,200, $1,300, and $1,400.
New Mean = (1,000 + 1,200 + 1,300 + 1,400) / 4
New Mean = 3,900 / 4
New Mean = 975
So, after removing the $4,800 rent, the mean rent for the remaining 4 apartments is $975 per month.
New Median = Since there are 4 rents, the median is the average of the middle two rents.
New Median = ($1,200 + $1,300) / 2
New Median = $2,500 / 2
New Median = $1,250
After removing the $4,800 rent, the median rent for the remaining 4 apartments is $1,250 per month.