what is median of 85,90,90,80,80,80, and 75

Question

Mercias last seven test scores are 85 90 90  80 80 80 75

b. What is the median of the scores?

c. What is the mode of the scores?

Answer 1

mode 80

med 80 

mean 82.8

Answer 2

The median is the score that is closest to the center. If it's an even sample then you take the average of the two numbers in the center.

First we organize the scores in ascending order

75, 80, 80, 80, 85, 90, 90.

The median is the center of the 7, so it will have 3 on each side. Median=80. 

The most is number that is repeated the most. 90 is on twice but 80 is present 3 times, making 80 the mode also.

I assume you meant to add mean on here too. Mean is the average of all the numbers which you acquire from adding up N numbers and dividing the sum by N.

(75+80+80+80+85+90+90)/7= 580/7= 82.857

There you have it

Median=80

Mode=80

Mean=82.857