Khan Academy / High School / Math
Lecture : Statistics: Standard Deviation
By Salman Khan | Statistics
Lecture 5 of 67
Rate this lecture -
 More Lectures - Select Lecture...1 : Statistics: The Average2 : Statistics: Sample vs. Population Mean3 : Statistics: Variance of a Population4 : Statistics: Sample Variance5 : Statistics: Standard Deviation6 : Statistics: Alternate Variance Formulas7 : Introduction to Random Variables8 : Probability Density Functions9 : Binomial Distribution 110 : Binomial Distribution 211 : Binomial Distribution 312 : Binomial Distribution 413 : Expected Value: E(X)14 : Expected Value of Binomial Distribution15 : Poisson Process 116 : Poisson Process 217 : Law of Large Numbers18 : Normal Distribution Excel Exercise19 : Introduction to the Normal Distribution20 : ck12.org Normal Distribution Problems: Qualitative sense of normal distributions21 : ck12.org Normal Distribution Problems: z-score22 : ck12.org Normal Distribution Problems: Empirical Rule23 : ck12.org Exercise: Standard Normal Distribution and the Empirical Rule24 : ck12.org: More Empirical Rule and Z-score practice25 : Central Limit Theorem26 : Sampling Distribution of the Sample Mean Sampling Distribution of the Sample Mean27 : Sampling Distribution of the Sample Mean 228 : Standard Error of the Mean29 : Sampling Distribution Example Problem30 : Confidence Interval 131 : Mean and Variance of Bernoulli Distribution Example32 : Bernoulli Distribution Mean and Variance Formulas33 : Margin of Error 134 : Margin of Error 235 : Confidence Interval Example36 : Small Sample Size Confidence Intervals37 : Hypothesis Testing and P-values38 : One-Tailed and Two-Tailed Tests39 : Z-statistics vs. T-statistics40 : Type 1 Errors41 : Small Sample Hypothesis Test42 : T-Statistic Confidence Interval43 : Large Sample Proportion Hypothesis Testing44 : Variance of Differences of Random Variables45 : Difference of Sample Means Distribution46 : Confidence Interval of Difference of Means47 : Clarification of Confidence Interval of Difference of Means48 : Hypothesis Test for Difference of Means49 : Comparing Population Proportions 150 : Comparing Population Proportions 251 : Hypothesis Test Comparing Population Proportions52 : Squared Error of Regression Line53 : Proof (Part 1) Minimizing Squared Error to Regression Line54 : Proof (Part 3) Minimizing Squared Error to Regression Line55 : Proof (Part 4) Minimizing Squared Error to Regression Line56 : Regression Line Example57 : Proof Part 2 Minimizing Squared Error to Line58 : R-Squared or Coefficient of Determination59 : Second Regression Example60 : Calculating R-Squared61 : Covariance and the Regression Line62 : Chi-Square Distribution Introduction63 : Pearsons Chi Square Test (Goodness of Fit)64 : Contingency Table Chi-Square Test65 : ANOVA 1 - Calculating SST (Total Sum of Squares)66 : ANOVA 2 - Calculating SSW and SSB (Total Sum of Squares Within and Between).avi67 : ANOVA 3 -Hypothesis Test with F-Statistic

Course Description

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Courses Index
1 : Algebra I Review - High School   (Salman Khan / Khan Academy)
2 : Geometry   (Multiple Instructors / Brightstorm)
4 : Geometry – Worked Examples   (Salman Khan / Khan Academy)
5 : Fundamentals of Geometry   (James Sousa / MathIsPower4U)
6 : Algebra II   (Multiple Instructors / Brightstorm)
7 : Algebra II – 10th grade   (Derek Owens / Derek Owens)
8 : Algebra I - Martin Gay Textbook   (Julie Harland / MathGal)
9 : Algebra II - 2008 Prentice Hall Algebra 2 Textbook   (Brad Robb / WowMath)
10 : Algebra II – Worked Examples   (Salman Khan / Khan Academy)
11 : Algebra II - Worked Problems   (Brad Robb / WowMath)
12 : Pre-Calculus   (Multiple Instructors / Brightstorm)