Sky News
Boris Johnson speaking during coronavirus press briefing
CLEAN: Interior shots of Prime Minister Boris Johnson speaking at a Downing Street Covid-19 press briefing on the first anniversary of the first national lockdown on 23 March 2021 in London, United Kingdom
Bloomberg
India Now Has Fastest-Growing Covid-19 Caseload
Apr.19 -- Eurasia Group Global Health Special Advisor Scott Rosenstein speaks to Bloomberg's Alix Steel and Guy Johnson about Covid-19 cases hitting a weekly record and India's struggle with an increased caseload. He speaks on...
Bloomberg
World Turns to China Vaccines Amid Effectiveness Concerns
May.06 -- The world is fast becoming ever more reliant on China for vaccines despite concerns about their effectiveness. Jodi Schneider explains why on "Bloomberg Daybreak: Asia."
Bloomberg
BlackRock's Chaudhuri on Earnings
Jul.21 -- Gargi Chaudhuri, BlackRock Head of iShares Investment Strategy Americas, discusses earnings, global growth and risks of delta variant. She speaks to Bloomberg's Alix Steel on "Bloomberg Markets: America."
Bloomberg
BofA's Moynihan Says Central Banks Will Struggle After Virus
Jun.17 -- Bank of America Chairman and CEO Brian Moynihan says consumers still have fiscal stimulus to spend which should help the U.S. economy to grow. He speaks with Bloomberg's David Westin on "Bloomberg Surveillance."
Bloomberg
Don't Put Guard Down on Covid, Moderna Chairman Warns
Jun.30 -- Moderna Chairman and co-founder Noubar Afeyan says the company will continue to test its vaccines against the new Covid-19 variants that emerge. He speaks on "Bloomberg Surveillance: Early Edition."
Bloomberg
Covid Vaccinations and the Pursuit of Herd Immunity
Feb.22 -- Foxhall Internists Internal Medicine Physician Lucy Mcbride discusses results of the latest study on the efficacy of the Pfizer-BioNTech vaccine, achieving herd immunity through vaccinations, and the questions that remain about...
Crash Course
ANOVA: Crash Course Statistics #33
How do you account for multiple variables when analyzing data? Following a lesson on regression, the 33rd lesson in the Crash Course Statistics series examines the ANOVA, analysis of variances, method of determining differences...
Khan Academy
Khan Academy: Statistics: Standard Deviation
Video reviews the population and sample mean and variance then expands to population and sample standard deviation. Gives examples of calculating the standard deviation. [13:07]
Khan Academy
Khan Academy: Statistics: Anova 1 Calculating Sst(total Sum of Squares)
Video demonstrates how to calculate the total sum of squares and uses the degrees of freedom to calculate variance. [7:39]
Khan Academy
Khan Academy: Statistics: Standard Error of the Mean
Video first briefly reviews the effect on the sampling distribution when the sample size increases then gives the formula for variance of the sample mean of the sampling distribution and formula for standard error of the mean. Uses the...
Khan Academy
Khan Academy: Statistics: Anova 2 Calculating Sum of Squares Within and Between
Video demonstrates how to calculate the sum of squares within and the sum of squares between. Discusses the relationship between the sum of squares within, the sum of squares between and the total sum of squares and the relationship...
Khan Academy
Khan Academy: Statistics: Alternate Variance Formulas
Video shows using algebra to manipulate the variance formula to arrive at alternate variance formulas. [12:17]
Texas Education Agency
Texas Gateway: Study Edge Statistics: Measuring Spread of a Distribution
This lesson looks at the different measures of center and variability that are used when analyzing the spread of data in a distribution. Includes downloadable study guide with exercises - guide also covers other topics. [17:21]
Other
Math Tutor Dvd: What Is Variance in Statistics?
Video lesson investigates the concept of variance in statistics and discusses how variance is derived and what the equations of variance mean. [17:03]
Sophia Learning
Sophia: Employing the Empirical Rule: Lesson 1
This lesson shows how to put the empirical rule to use. It is 1 of 7 in the series titled "Employing the Empirical Rule."
Sophia Learning
Sophia: Z Score Charts: Lesson 1
This lesson shows how charts can be used to determine and list Z-scores. It is 1 of 4 in the series titled "Z Score Charts."
Sophia Learning
Sophia: Z Scores: Lesson 3
In this lesson, students are introduced to Z-scores and their relevance to variance and distribution in data sets. It is 3 of 7 in the series titled "Z Scores."
Sophia Learning
Sophia: Z Scores: Lesson 6
In this lesson, students are introduced to Z-scores and their relevance to variance and distribution in data sets. It is 6 of 7 in the series titled "Z Scores."
Sophia Learning
Sophia: Variance: Lesson 5
This lesson introduces and defines variance and the role it plays in data sets. It is 5 of 5 in the series titled "Variance."
Sophia Learning
Sophia: Employing the Empirical Rule: Lesson 2
This lesson shows how to put the empirical rule to use. It is 2 of 7 in the series titled "Employing the Empirical Rule."
Sophia Learning
Sophia: Z Scores: Lesson 5
In this lesson, students are introduced to Z-scores and their relevance to variance and distribution in data sets. It is 5 of 7 in the series titled "Z Scores."
Khan Academy
Khan Academy: Analysis of Variance: Anova 1 Calculating Sst
Video demonstrates how to calculate the total sum of squares and uses the degrees of freedom to calculate variance.
Khan Academy
Khan Academy: Sampling Distribution: Standard Error of the Mean
Video first briefly reviews the effect on the sampling distribution when the sample size increases then gives the formula for variance of the sample mean of the sampling distribution and formula for standard error of the mean.