Question

Help me please i need this done in 5 mins

Answer 1

Answer: 72.7

Explanation:

The Table is showing you how many students made each score [Ex: 9 students scored a 60].

The mean is the average, which is found by adding all the numbers and dividing them by the number of terms that were added.

Thus,

60+60+60+60+60+60+60+60+60=540

65+65+65+65+65+65+65+65=520

70+70+70+70=280

75=75

80+80+80+80+80+80=480

85+85+85=255

90+90+90+90+90+90=540

Add it: 540+520+280+75+480+255+540=2690.

The total number of students who took the exam was 37.

2690/37= About 72.7

Answer 2

72.7

Explanation:

Mean is the average of the data set. In this case we have...

60,60,60,60,60,60,60,60,60,65,65,65,65,65,65,65,65,70,70,70,70,75,80,80,80,80,80,80,85,85,85,90,90,90,90,90,90

To find the average, we add the numbers and divide by the amount of numbers added.

The sum of the numbers listed above: 2690

Now we have to divide 2690 by 37

Rounded to the nearest 10th, the answer should be 72.7