Which of the following observations is true about scattergrams? Multiple Choice They help in identifying the most important cause of a problem. They are useful for understanding the amount of variance between an outcome and the expocted value or average outcome. They help employees determine whether the relationship between two variables or events is positive, negative, or zero. They assume that the mejority of problems are the result of a small number of causes. They are useful for identifying redundancy in processes that incteases manufacturing or service time