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How to Calculate Sample Size and Margin of Error
Explore the effect sample size has on margin of error and confidence interval. The instructor calculates the margin of error of fictional data. He shows how the calculation changes when the sample size changes while keeping the other...
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How to Calculate Confidence Intervals and Margin of Error
Explore the meaning of the margin of error and how to use it to calculate the confidence interval with a video that explains how to calculate a margin of error based on the sample size. The instructor also makes a connection between...
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How to use Excel to Calculate Confidence Interval
Utilize Excel software to analyze a set of data by making statistical calculations. The instructor shows how to find the standard deviation, mean, minimum, maximum, margin of error, confidence intervals, and range using Excel commands....
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How to Calculate Margin of Error Confidence Interval for a Population Proportion
Teach how to find a confidence interval from a population proportion and margin of error with a video that reviews how to find a population proportion and a margin of error. The instructor then explains how to create a confidence...
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Derive the Sample Size Equation for Population Proportions
There are too many equations to memorize, but a helpful trick will make it easier. When you start with the confidence interval equation, the video walks through how to solve it and create the sample size equation.
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Deriving the Sample Size Equation
Where do all of these equations come from? A statistics video explains how to find the sample size equation based on the formula for the confidence interval.
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How to Calculate Margin of Error and Standard Deviation
What did the math book say to the psychology book? I have a lot of problems. A helpful video covers how to calculate the margin of error with various standard deviation numbers.
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How to Calculate Standard Deviation and Variance
What if math teachers are really pirates and they want us to find x so they can get the buried treasure? A short video explains how to calculate standard deviation and variance with a step-by-step guided practice problem. The...
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How to Calculate Probablity, Addition, and Complements
Conditional probability problems love dice. Wanna bet on the answers? The last video in a series of six thoroughly explains the possible outcomes when rolling dice. Additionally, it describes the process of calculating the...
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How to Add Probabilites and Multiply Probabilities Using Marbles
Do you want a red marble and a green marble, or do you want a red marble or a green marble? Calculating the probability in these two situations is very different. Use the fifth video in a series of six to explain the difference in the...
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How To Calculate Conditional Probability Boxes With Defects
Branch out with a tree diagram. A presentation on complex probability explains the process of creating a tree diagram to represent the possible outcomes in a scenario. It then uses the diagram to calculate the...
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Boy Girl Conditional Probability
The key to understanding conditional probability is understanding the context of the problem presented. The video presents two questions with a subtle difference between them, then teaches scholars to decipher the difference and...
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How to Calculate Conditional Probability
Under which condition should you calculate a conditional probability? An educational video explains in detail the notation and calculations involved when finding a conditional probability. Using Venn diagrams to organize the...
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How to Calculate Probability With and Without Replacement Using Marbles
Math can give you an advantage in many games, you just have to know where to find it! Learn how to calculate probability to decide on a strategy to better your chance of winning. The video examines the difference between compound...
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Why are Degrees of Freedom (n-1) Used in Variance and Standard Deviation
Don't be mean, be above average. A straightforward video explains why degrees of freedom are used and how to recognize the error based on your sample population.
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Calculate A Sample Size of a Population Proportion
I think we need a new teacher; this one keeps asking us for the answers! The video walks through how to solve for sample size when you are given a z score, proportion, and margin of error. It also explains a graph of the relationship...
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Calculate Sample Size Interval of a Population Mean
When does .2 round up rather than down? The example in a statistics video changes the rules about rounding. The video walks through how to solve for sample size when you are given the error, z score, and standard deviation. It...
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How to Calculate Sample Size Proportions
Have you ever wondered about the proportion of ducks it would take to equal one bear's weight? (It's 423.) The video walks through how to solve for sample size when you already know the confidence, error, and proportion. It also graphs...
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How to Calculate Sample Size
If your sample size is small and your standard deviation is high, your results mean nothing. The video explains how to solve for sample size, assuming you are given the confidence, standard deviation, and error rate.
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How to Calculate Mean and Standard Deviation
Good news! We only have a half day of school this morning. Granted, we have the other half this afternoon. The video is a visual representation of the definitions of mean and standard deviation.
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How to Calculate Standard Deviation, Mean, Variance Statistics, Excel
Wouldn't life be easier if a computer would do the work for us? A video shows how to use Excel to solve for standard deviation, mean, and variance statistics.
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Calculating Standard Deviation Using Excel
Excel at your work with a lesson featuring spreadsheets. A video walks pupils slowly through how to solve standard deviation and variance using Excel in two different ways.
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Standard Deviation and Variance
When does 10 + 7 = 13? When you add wrong. The video walks you through solving standard deviation and variance problems by hand, including ways to check your work.
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Introduction to Permutations and Combinations
Upper level math doesn't have to be unapproachable. An instructional video uses virtual manipulatives to demonstrate the meaning of a permutation, a combination, and factorial.