Discrete Random Variables – Expected Value, Variance & SD from Tables

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Discrete Random Variables – Expected Value, Variance & SD from Tables

SAT Score Range

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3 sessions

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This series ended on September 12, 2025. All 1:1 and group chats related to this series are disabled 7 days after the last session.

About

In this fast‑paced workshop, we will cover➜ 
Part 1: build probability tables from raw and grouped data, then compute Σx, Σx² or coded totals Σ(x–a), Σ(x–a)² to find E(X), Var(X) and SD. Part 2: Compare two data sets and discuss interpretation. Finish with advanced scenario‑based questions. All formulas supplied; proofs not required.
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Format → concept walk‑through ➜ live worked examples ➜ learner practice from recent CAIE past papers ➜ solution discussion & Q / A.  
Bring a pen, paper, and a calculator; a basic understanding of the material is assumed.

Tutored by

Tasheen U 🇧🇩

Certified in 14 topics

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A recent graduate of CAIE A-levels with Mathematics, Physics, and Computer Science. Currently, pursuing my B.Sc. in Computer Science & Engineering. Passionate about math and education, I am eager to help others excel in subjects including math, physics, computer science, and SAT Prep. Excited to tutor in various math areas such as Algebra, Geometry, Pre-Calculus, Calculus, and Statistics. Let's learn and grow together!

Sessions

✋ ATTENDANCE POLICY

This is an intensive series. Please join on time and stay for the full duration. Active participation (chat or mic) is required.

SESSION 1

26

Aug

SESSION 1

Random variables and probability distributions

Tue 11:30 AM - 12:20 PM UTCAug 26, 11:30 AM - 12:20 PM UTC

I will introduce the topic (as explained in the series details) with a mini-lecture and will practice past paper questions.

SESSION 2

29

Aug

SESSION 2

Random variables and probability distributions

Fri 5:00 AM - 6:00 AM UTCAug 29, 5:00 AM - 6:00 AM UTC

We will practice on the topic that I have introduced in the previous session. We will do so by solving more similar and advanced problems

SESSION 3

12

Sep

SESSION 3

Random variables and probability distributions

Fri 4:45 AM - 6:15 AM UTCSep 12, 4:45 AM - 6:15 AM UTC

We will practice on the topic that I have introduced in the 1st session. We will do so by solving more similar and advanced problems

Public Discussion

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Aug 26 - Sep 12

3 weeks

50 - 90 mins

/ session

SCHEDULE

Tuesdays

11:30AM

Fridays

5:00AM

Fridays

4:45AM