You must have lost the meaning of the topic. It's simple.
100000 USD-133000 USD price range 12 apartments, 134000 USD-166000 USD with 25 apartments and 160 USD with 8 apartments.
If the highest price of 45 houses is $ 190000, then the interval of house price (interval, highest price-lowest price) is at least $57000.
Because it is known that the highest price is 190,000 and there is a house in the range of100,000-133,000, even if all the houses in 12 are133,000, the range is190.