Understanding Quartiles and Deciles

Understanding Quartiles and Deciles

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Thomas White

FREE Resource

The video tutorial covers the calculation of central tendencies, including mean, median, and mode. It then delves into quartiles, explaining how to calculate them for both discrete and grouped frequency data. The tutorial further explores deciles and percentiles, providing formulas and examples for their calculation.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the median in terms of data distribution?

The value that divides data into four equal parts

The value that divides data into ten equal parts

The value that divides data into three equal parts

The value that divides data into two equal halves

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many quartiles are there in a data set?

Three

Five

Four

Two

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula to find the first quartile (Q1) in discrete data?

(n + 1) / 4

(n + 1) / 2

n / 4

3(n + 1) / 4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In grouped frequency data, what is the first step in calculating quartiles?

Find the mode

Arrange data in descending order

Calculate the cumulative frequency

Calculate the mean

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for calculating the median in grouped frequency data?

L + (h / f) * (n / 100 - CF)

L + (h / f) * (n / 10 - CF)

L + (h / f) * (n / 4 - CF)

L + (h / f) * (n / 2 - CF)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of the second quartile (Q2) in terms of data distribution?

It is the same as the median

It is the same as the third quartile

It is the same as the mode

It is the same as the first quartile

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the term 'deca' in deciles refer to?

Five

Ten

Twenty

Fifty

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