Question

Sara has been using an online review program to take practice tests for her upcoming graduation exam. Her scores are shown in the table. What is the third quartile of the data shown?

Answer 1

Answer:

3rd Quartile is 8.

Step-by-step explanation:

Given Series is Discrete Series.

So we use method of finding Quartile in discrete series.

For this we first find Cumulative frequency.

Table with cumulative frequency is attached.

Formula for Quartile = $Q_{n} = Size\:of\:n\times(\frac{N+1^{th}}{4})\:item$

N = 854

So, Third Quartile = $Q_{3}=Size\:of\:3\times(\frac{854+1}{4})^{th}item=Size\:of\:\frac{19}{4}^{th}\:item$$Q_{3}=Size\:of\:641.25^{th}\:item=8$

Therefore, 3rd Quartile is 8.

Answer 2

Answer:

86.5

Step-by-step explanation:

i got it wrong that's the correct one