none of the statistics provided are true.
How this conclusion is arrived at.
Given that
score earned Number of students
25 12
50 19
75 37
100 22
Mean = 25 * 12 + 50*19 + 75*37 + 100*22/12 + 19 + 37 + 22
mean = 300 + 950 + 2775 + 2200/90
= 6225/90
= 69 .17
Median = 90th/2 = 45th
when ordered from the least to the greatest
The median is 75
The mode is the number with highest frequency
this corresponds to 75
so, the mode is 75.
Therefore, none of the statistics provided are true
Complete question
Professor Ivy gave a 4 question quiz. The results of her class are as follows: Score Numberof earned students 25 12 50 19 75 37 100 22
Which of the following statements is true?
the median score is 45
the average score per student is 22.5
the mode is 37
all of the statistics provided are true
none of the statistics provided are true