Answer:
C.
Step-by-step explanation:
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Noce
Step by step solution
Dd
D
D
Dd
D
F
9(7 + 8) = (9 x 7) + (9 x 8) = 63 + 72 = 135
Step-by-step explanation:
We are told that for a large data set of a average student grades, the third quartile Q3 is found 78.5.
Since we know that third quartile represents the number such that 75% of the data is less than this number. Third quartile is the middle value between median and the highest value of a data set. Third quartile is also known as upper quartile. Third quartile splits lower 75% data from highest 25% of data.
Therefore, third quartile represents that 75% of student grades are less than 78.5 and 25% of students grades are greater than 78.5.
