Quartile and Decile of Grouped Data

Nineth decile is

• a measure used to describe the distribution of data.

• also called the upper decile.

• also called the lower decile.

• the sum of the numbers in a set of data divided by the number of pieces of data.

First decile is

• also called the upper decile.

• a value that is much higher or much lower than the other values in a set of data.

• also called the lower decile.

• the value appearing at the center of a set of data that has been sorted in numerical order.

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile (UQ) of the data?

• 37
• 38
• 40
• 46

The median is equivalent to...

• the middle quartile (Q₂)
• the fifth decile (D₅)
• the 50th percentile (P₅₀)
• all of these

What measures of position divides the distribution into 10 equal parts?

• quartiles
• deciles
• percentiles
• range

What measures of position divides the distribution into 4 equal parts?

• quartiles
• deciles
• percentiles
• range

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

How many percent of the observation is less than the value of D7?

• 25%

• 50%

• 70%

• 90%

How many percent of the observation is less than the value of D6?

• 20%

• 40%

• 60%

• 80%

How many percent of the observation is above Q1?

• 25%

• 50%

• 75%

• 80%

The formula in finding the nth decile of grouped data is  $D_k=LB\ +\left(\ \frac{\frac{kN}{10}-CF_b}{F_{dk}}\right)i$  . CF means ______

• Class frequency

• Class interval

• Cumulative frequency

• Commulative frequency