When viewing quick table calculations, such as Percent Difference from, that use a value in the previous column, what will be the first data value in the visualization?
When viewing quick table calculations, such as Percent Difference from, that use a value in the previous column, what will be the first data value in the visualization?
When using quick table calculations such as Percent Difference from, the calculation for the first data value has no previous value to compare against. Therefore, the first data value will be null since there is no previous column to calculate the difference from.
https://help.tableau.com/current/pro/desktop/en-us/calculations_tablecalculations_definebasic_runningtotal.htm
When calculating year-over-year growth, the first year doesn't have a previous year to compare to, so the column is left blank.
The Answer : B
Anwser: B Due to we dont have previous period to calculate the value the result is a blank/null
B: null (blank)