The table shows the number of calls received by each of five operators during each of 4 one-hour periods. For which operator was the standard deviation of the numbers of calls received during these 4 periods the least  Choose one.
A) Operator A: 3, 7, 7, 3 B) Operator B: 4, 5, 5, 6 C) Operator C: 8, 2, 5, 5 D) Operator D: 6, 4, 4, 6 E) Operator E: 3, 4, 5, 8
Operator E: 3, 4, 5, 8   it has 2 numbers right at the average, Operator E: 3, 4, 5, 8 has none.
<result>E</result>
The table shows the number of calls received by each of five operators during each of 4 one-hour periods. For which operator was the standard deviation of the numbers of calls received during these 4 periods the least