Question

The bar graph shows the z-score results of four employees for two different work weeks.

Answer 1

We observe that week 1 is represented by the color blue.
 Therefore, you should check the bars in blue for the four employees.
We observe that the smallest z-cores is -0.5.
 Therefore, Oberto has the lowest earnings for week 1.
 Answer: 
 Oberto had the least earnings for Week 1