Statistics Final Assessment

Practise focused skills from Statistics

MathematicsGrade 10Mixed24 questions48 min

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Focus question style

Core Concepts · 6 questionsMedian and Mode · 6 questionsApplications · 6 questionsError Analysis · 6 questions

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Core Concepts

Grouped data basics and mean.

Choose the best answer for each question.

Question 1

MediumQuestion

A grouped table has intervals $5-15,15-25,25-35$ . What is the class width?

Topic: Grouped Data Basics · Skill: Read grouped frequency distributions

Question 2

MediumQuestion

The class mark of $60-80$ is:

Topic: Grouped Data Basics · Skill: Find class marks

Question 3

MediumQuestion

If $\sum f_i x_i=900$ and $\sum f_i=25$ , the direct-method mean is:

Topic: Mean · Skill: Compute mean by direct method

Question 4

AdvancedQuestion

If assumed mean $a=25$ , $\sum f_i d_i=60$ , and $\sum f_i=20$ , find the mean.

Topic: Mean · Skill: Compute mean by assumed mean method

Question 5

AdvancedQuestion

In step-deviation, $a=50$ , $h=5$ , $\sum f_i u_i=-12$ , $\sum f_i=30$ . Find mean.

Topic: Mean · Skill: Compute mean by step-deviation method

What this assignment covers

Mixed assessment covering grouped mean, median, mode, interpretation and error analysis.

Skills and sections

Read grouped frequency distributions, Find class marks, Compute mean by direct method, Compute mean by assumed mean method, Compute mean by step-deviation method

Core Concepts: 6 questions
Median and Mode: 6 questions
Applications: 6 questions
Error Analysis: 6 questions