Grade 10 Mathematics Quiz

What is the median of the dataset: 8, 12, 15, 20, 25?

• 12

• 15

• 20

• 17

The median divides the dataset into how many equal parts?

• 2

• 3

• 4

• 10

The first quartile (Q₁) is also known as:

• 10th percentile

• 25th percentile

• 50th percentile

• 75th percentile

The third quartile (Q₃) represents which percentile?

• 25th

• 50th

• 75th

• 90th

How many deciles are there in a dataset?

• 4

• 9

• 10

• 100

The median is equivalent to which of the following?

• 2nd quartile

• 5th decile

• 50th percentile

• All of the above

If a dataset has 9 numbers, what is the position of the median?

• 4th

• 4.5th

• 5th

• 6th

If you are looking for the 7th decile, you are finding the:

• 30th percentile

• 50th percentile

• 70th percentile

• 90th percentile

Which measure divides a dataset into 100 equal parts?

• Quartiles

• Deciles

• Percentiles

• Medians

The formula for finding the position of a quartile in an ordered dataset is:

• Qk=kn+14

• Qk=k(n-1)4

• Qk=k(n)4

• Qk=k(n+1)2