hard20 pts · first answer countsstatisticsdata-visualization

Correlation near zero

The Pearson correlation between discount level and customer satisfaction is 0.02. A colleague says discounts have no relationship with satisfaction. What should you check?

A.Nothing; 0.02 proves there is no linkB.Switch to a pie chart of the two variablesC.Remove all customers with discountsD.Plot the data: Pearson only measures straight-line relationships, so a U-shape or a pattern hidden inside segments can still give a value near zero

← Worst stores improved on their own Feature users retain better →