Video Library
Lecture videos for every topic in Units 1β6, weighted toward the ones that solve problems on screen rather than lecture at you. Watch to get the method, then come back and write it from the notes.
β About these links
Every link below has been verified live β the video exists, and the title and channel shown are the real ones, checked programmatically against YouTube's oEmbed API. Four candidates came back dead or private and were dropped rather than listed on a guess.
Timestamps are not given. Reading a video's chapter markers requires loading the video page itself, which is not possible from this environment. Rather than print plausible-looking timestamps that might send you to the wrong minute, none are shown. Most of these are single-topic videos where the whole video is the relevant section.
β The seven videos that map onto the seven exam slots
If you watch nothing else, watch one per slot:
| Slot | Topic | Video |
|---|---|---|
| Q1 (a) | Sampling distribution of the mean | Standard error of the mean β numericals Β· Gourav Manjrekar |
| Q1 (b) | Poisson | Poisson β solved examples, easiest way Β· Dr. Harish Garg |
| Q2 (b) | Normal distribution | Standardizing normally distributed random variables Β· jbstatistics |
| Q3 (a) | Skewness & kurtosis reading | Pearson's coefficient, skewness & kurtosis Β· Dr. Gajendra Purohit |
| Q3 (b) | Sample size | Sample size from confidence level & margin of error Β· The Organic Chemistry Tutor |
| Q5 (a) | Bayes' theorem | Bayes' Theorem, clearly explained Β· StatQuest |
| Q5 (b) | Standard error, again | Mean and standard error of a sampling distribution Β· Math and Stats Help |
Seven videos, about two hours, covering 31 of the 50 marks.
Units 1β2 β Descriptive Statistics
βΆ Frequency tables, grouped mean, median and mode
- ENMean, Median, and Mode of Grouped Data & Frequency Distribution Tables β StatisticsThe Organic Chemistry Tutor
- ENStatistics β Mean, Median & Mode for a grouped frequency dataVectors Academy
- ENMean, Median & Mode for a Grouped Frequency Data TableBrain Station
- ENHow To Find Mean, Median, Mode, Frequency Distribution, HistogramColfaxMath
- ENStop Struggling with Mean, Median & Mode for Grouped DataTambuwal Maths Class
The first two are the closest match to the class's Georgia-hospital worked example. Pairs with Unit 1 Concept 5 and practice problems A1βA2.
βΆ Histograms and ogives β reading the mode and median off a chart
- ENDetermining mode from histogram and median from ogiveRaihana Zainordin
- ENCalculate Mode and Median From Grouped Data and Draw the OgiveAnil Kumar
- ENMedian From Grouped Data Using an OgiveMr. Kruger's Mathematics
Pairs with Unit 1 Concept 4 and practice problem A3.
βΆ Skewness, kurtosis and the coefficient of variation β the Q3 (a) vocabulary
- ENPearson's Coefficient, Skewness & KurtosisDr. Gajendra Purohit
- ENSkewness and Kurtosis Part 7 β Examples on Karl Pearson's Coefficient of SkewnessMaths Platter by JC
- ENKarl Pearson's Coefficient of Skewness β Solved examples, Part 3Maths Platter by JC
- ENBowley's Coefficient of Skewness β Solved examples, Part 4Maths Platter by JC
- ENSkewness and Kurtosis Part 6 β Examples on Pearsonian's Coefficient of KurtosisMaths Platter by JC
- ENChebyshev Theorem, Skewness, Kurtosis, Percentiles in 6 minutesAmbarish Ganguly Academy
The last one is the fastest route to the whole Q3 (a) vocabulary. Pairs with Unit 2 Concepts 3β4 and practice problems B3βB4.
βΆ Chebyshev's theorem
- ENChebyshev's TheoremThe Organic Chemistry Tutor
Pairs with Unit 2 Concept 5 and practice problem B5.
Unit 3 β Probability
βΆ Addition, multiplication, conditional probability and independence
- ENMultiplication & Addition Rule β Mutually Exclusive & Independent EventsThe Organic Chemistry Tutor
- ENBasic Probability: The Multiplication Rulejbstatistics
- ENAddition and Multiplication Rules of ProbabilityDrCraigMcBridePhD
- ENConditional Probability and the Multiplication RuleEquitable Equations
- ENMultiplication Rule of Probability with Dependent Events (Conditional Probability)Math Made Easy with Laurel
- ENProbability: Multiplication & Addition RulesRahul Patwari
The first is the best single video for the mutually-exclusive-vs-independent distinction, which is the theory question this unit is most likely to produce. Pairs with Unit 3 Concept 2 and practice problems C1βC3.
βΆ Bayes' theorem β the highest-value topic in this unit
- ENBayes' Theorem, Clearly Explained!!!!StatQuest with Josh Starmer
- ENBayes theorem made easy (Business statistics)Unscripted life
- ENBayes Theorem | Bayes Theorem Example | Probability And Statistics TutorialSimplilearn
- ENBayes' Theorem EXPLAINED with ExamplesAce Tutors
- ENBayes' Theorem (with Example!)Steve Brunton
- ENConditional Probability and Bayes' Theorem | Intro to StatisticsChegg
StatQuest's version builds the intuition β why a rare condition makes most positives false β which is exactly the "managerial insight" sentence both papers ask for. Pairs with Unit 3 Concept 4 and practice problems D1βD4.
Unit 4 β Probability Distributions
βΆ Binomial β solved problems
- ENSolved Problems on Binomial Probability DistributionGourav Manjrekar (BeingGourav)
- ENDiscrete Probability Distributions: Example Problems (Binomial, Poisson, Hypergeometric, Geometric)jbstatistics
- ENProbability Distributions: From Basics to Binomial and PoissonLEARN & APPLY: Lean and Six Sigma
Pairs with Unit 4 Concept 2 and practice problems E1βE3.
βΆ Poisson β the Q1 (b) slot
- ENPoisson Distribution | Solved Examples | Easiest wayDr. Harish Garg
- ENPoisson vs Binomial Distribution β Concepts and Solved ExamplesShrenik Jain
- ENPoisson distribution examples and solutionsShrenik Jain
- HIPoisson distribution questions β GATE / MCQ / word problems (Hindi)Shrenik Jain
- ENStatistics 5.4.2 β Binomial, Poisson or Hypergeometric?SawFin Mathematics
"Poisson vs Binomial" is the one to watch if you keep picking the wrong distribution β that choice, not the arithmetic, is what loses marks in Q1 (b). Pairs with Unit 4 Concept 3 and practice problems E4βE6.
βΆ Normal distribution, standardising and reading the table β the Q2 (b) slot
- ENStandardizing Normally Distributed Random Variablesjbstatistics
- ENStandard Normal Distribution Tables, Z Scores, Probability & Empirical RuleThe Organic Chemistry Tutor
- ENEverything You Need to Know About Z-TablesJoeCMath
- ENZ-Scores, Standardization, and the Standard Normal Distribution (5.3)Simple Learning Pro
- ENZ Scores and Normal Distributions (Example Problems)Mario's Math Tutoring
- ENStandard Normal Distribution and Z-Score: Computing Normal ProbabilityNumberbender
- ENz-Score, z-Standardization, Standard Normal Distribution, z-Distribution Table β simply explainednumiqo
Watch the z-table video with your own table beside you. Most of these use the cumulative table; your class's table gives the area from 0 to z. The conversion rules are here. Pairs with Unit 4 Concept 4 and practice problems F1βF4.
βΆ Normal approximation to the binomial, with continuity correction
- ENSolved Examples: Normal Approximation to Binomial Distribution β Continuity CorrectionJoshua Emmanuel
- ENNormal Approximation to Binomial distribution (Continuity Corrections)ExamSolutions
- ENNormal Approximation of Binomial Distribution β Specifying Continuity CorrectionsMaths Resource
- ENNormal Approximations to Binomial Distributions β finding the correction for continuityCharles Ed
- ENNormal Approximation to Binomial with Half-Unit Correction for ContinuityBill Kinney
- ENProbability lesson 13 β Normal approximation to Binomial + continuity correctionMagic Monk
Joshua Emmanuel's is the cleanest on which direction to shift the Β±0.5 β the part everyone gets backwards. Pairs with Unit 4 Concept 5 and practice problems F5βF6.
Units 5β6 β Sampling Theory
βΆ Sampling distribution of the mean and the standard error β the Q1 (a) and Q5 (b) slots
- ENSampling Distribution and Standard Error of Mean β NumericalGourav Manjrekar (BeingGourav)
- ENMean and Standard Error of a Sampling Distribution of Sample MeansMath and Stats Help
- ENThe Sampling Distribution of the Mean & Standard ErrorPsychExamReview
- ENExamples: Finding Mean and Standard Error of Sampling DistributionsProfThacker
- ENSampling Distribution of the Mean β Population Mean and Standard Deviation (Walpole)Engineering Tutor
- ENStatistics β Mean and Standard Deviation of a Sampling DistributionNumberbender
- ENSampling Distributions for Sample Means ExplainedMichael Porinchak
- ENSampling Distribution β Finding Mean & Standard DeviationBrandon Myers
The first two are worth 7 marks in both papers β nothing else on this page has a better return per minute. Pairs with Unit 5 Concept 4 and practice problems G1βG3.
βΆ The Central Limit Theorem
- ENCentral Limit Theorem β Sampling Distribution of Sample MeansThe Organic Chemistry Tutor
- ENIntroduction to Sampling Distributions | Central Limit Theorem | Standard Error of xΜchrisferb
- ENThe Central Limit Theorem (7.3)Simple Learning Pro
Pairs with Unit 5 Concept 3.
βΆ Sampling distribution of a proportion
- ENSampling Distributions of the Sample Proportion (The Central Limit Theorem)Paul Miller
- ENCentral Limit Theorem for a Sample ProportionKatie Ann Jager
- ENCentral Limit Theorem for Proportions β Sampling Distribution of Sample ProportionsRed Rocks Community College
- ENCentral Limit Theorem for ProportionsMathAdamSpiegler
- ENDistribution of Sample Proportions and Central Limit TheoremBrian Amedee
- ENThe Central Limit Theorem for Sample ProportionsNicole Hamilton
- EN3.17 Central Limit Theorem: Sample ProportionMakenzi Hurtado
Watch for the np β₯ 5 and nq β₯ 5 check β every good video does it explicitly, and so should your answer. Pairs with Unit 6 Concept 2 and practice problems H1βH3.
βΆ Finite population correction
- ENFinite population correction factor in simple random sampling, W.O.R and W.RFareeza Fayyaz
- ENExcel Statistics 70: Standard Error and Correction Factor For Finite Populationsexcelisfun
The second shows it in Excel, which is what the syllabus's "MS Excel" outcome asks for. Pairs with Unit 5 Concept 4 and practice problem G4.
βΆ Margin of error and sample size determination β the Q3 (b) slot
- ENHow To Calculate The Sample Size Given The Confidence Level & Margin of ErrorThe Organic Chemistry Tutor
- ENCalculating Sample Size (n) to Estimate a Population MeanJoshua Emmanuel
- ENHow to compute a sample size, n, based on a given margin of error (proportions)Jennifer Ward
- ENMargin of Error & Sample Size for Confidence Interval β Statistics Tutorial #11MarinStatsLectures
- ENSample size for a given margin of error for a meanKhan Academy
- ENDetermining sample size based on confidence and margin of errorKhan Academy
- ENFind Sample Size for a Margin of ErrorMichael Porinchak
- ENHow to calculate sample size and margin of errorstatisticsfun
- ENFinding the Sample Size given the Margin of ErrorWOWmath
Joshua Emmanuel for the mean formula, Jennifer Ward for the proportion formula β those are the Final's and the Re-Exam's two versions of this slot. Pairs with Unit 6 Concept 5 and practice problems I1βI5.
β Where these videos will disagree with your class
- The z table. Almost every video uses the cumulative table (Ξ¦(z), running to 1.0000). Your class's table gives the area from 0 to z (running to 0.4998). Neither is wrong; the arithmetic differs. Keep the conversion rules open while you watch.
- Kurtosis benchmarks. Videos that use Excel's
KURT()compare against 0. Your papers compare against 3. Use 3. - Sample-size z at 99%. Some use 2.58, some 2.576. Either is accepted; the official key uses 2.576.
- Videos that continue past your syllabus. Many sampling-distribution videos go on into confidence intervals, t-distributions and hypothesis testing. Those are Units 7β14, outside the mid-term. Stop when the video does.
How to actually use a video on a numerical subject
- Read the concept here first. Ten minutes on the unit page makes an hour of video make sense.
- Pause before every worked example and try it on paper. Watching someone else solve a problem builds recognition, not skill.
- Copy the layout, not just the answer. The marks in a 5-mark question are for naming the distribution, writing the formula, drawing the curve and stating the conclusion in words.
- Then do the matching practice problems here without looking. That is the only step that actually tests whether it stuck.