The conversation between human and AI assistant.
[|Human|] Based on a given list of data, calculate the average a customer spends in a store
[|AI|] Based on the data provided, the average amount a customer spends in the store can be calculated by adding all the amounts and dividing by the number of data points. 

$12 + $14 + $27 + $23 = $76

There are 4 data points, so the average amount a customer spends is $76/4 = $19.
[|Human|] 
Based on a given list of data, calculate the average a customer spends in a store