Question

a student has these scores on their assignments. {0, 40, 60, 70, 75, 80, 85, 95, 95, 100} the teacher is considering dropping a lowest score. what is the new mean?

Explanation:

Step1: Remove the lowest score

The lowest score is 0. The new set of scores is {40, 60, 70, 75, 80, 85, 95, 95, 100}.

Step2: Calculate the sum of scores

$40 + 60+70 + 75+80+85+95+95+100=700$

Step3: Calculate the number of scores

There are 9 scores in the new set.

Step4: Calculate the new mean

The mean is the sum divided by the number of scores. So, $\frac{700}{9}\approx77.78$

Answer:

$77.78$