Which of the following statements is true about pareto charts?
1. It is based on Pareto principle which states that 80% of the problems come from 20% of causes.
2. It is specialized version of histogram that ranks the categories in the chart from most frequent to least frequent.
3. It is based on Pareto principle which states that 20% of the problems come from 80% of causes.
4. It is specialized version of histogram that ranks the categories in the chart from least frequent to most frequent.
a. 1, 2 & 3
b. 1 & 2
c. 3 & 4
d. 2, 3 & 4
e. All of the above