Five teachers were hired at Oakdale Middle School at the beginning of the 2005 school year. The performance of each teacher was
rated by the principal at the conclusion of each school year. The performance ratings are charted below. Please use this information to answer the question.
Which teacher exhibited the most variable year-to-year performance over this 5 year span?
Jill
Ed
Ralph
Sam
Which teacher exhibited the most variable year-to-year performance over this 5 year span?
Jill
Ed
Ralph
Sam
2 answers:
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Answer:
Step-by-step explanation:
Given
Set: -10 to 10
Required
Write as interval notation
We start by writing the given parameter as an inequality
The direct representation of and
in interval representation of sets is
and
, which shows that the beginning and end of the interval are inclusive;
So, the above inequality in interval notation is: