Use a frequency list or weighted data

Press these keys

Walkthrough

1. 1
   Enter values

   Put distinct values in L1 and their frequencies in L2.

2. 2
   Select frequency

   In 1-Var Stats set List to L1 and FreqList to L2.

3. 3
   Check n

   The displayed n should equal the sum of frequencies, not the number of rows.

Worked example