Curated OER
How Do You Find the Mean of a Data Set?
There are eight decimals numbers in this data set. Find the mean. So add all the terms together and then divide that total number by the number of terms in the data set. That's how you find the mean or average of a data set.
Curated OER
What is Numerical, or Quantitative, Data?
The teacher gives a very thorough explanation of numerical or quantitative data being anything where the answer to a question would be a number. Whereas any other answer might be considered categorical. She shows several different ways...
Curated OER
What is the Median of a Data Set?
Mean, mode, median? What's the difference? How do you find them? The teacher focuses on explaining median in this video. She gives a good explanation and shows several examples using different sets of numbers.
statisticsfun
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.
statisticsfun
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...
statisticsfun
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...
statisticsfun
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.
statisticsfun
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.
statisticsfun
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.
Curated OER
Mean, Median, and Mode
How many types of average are there? This video describes how to determine the mean, median, and mode of a set of numbers. Each type is worked through using one data set and the instructor shows the procedure for determining each.
Khan Academy
MTEL Math Practice Test: 41-45
Finishing up this practice MTEL Math test, Sal guides the viewer through questions 41-45, explaining his thought processes. The problem set in this video features skills such as median and mean, percentages, and probability, all of which...
Khan Academy
MTEL Math Practice Test: 1-4
Are you worried about the MTEL? Never fear—Sal is here! Designed for adults seeking their teaching credentials in Massachusetts, this series of videos guides future teachers through a practice test for the Math MTEL. The valuable...
Curated OER
What is the Mean of a Data Set?
Average, mean, average, mean. They are the same thing. So just use the formula for finding the average of a set of numbers to get the mean. Add up the value of the terms and then divide by the number of terms in the data set. There's the...
Curated OER
What is Numerical, or Quantitative, Data?
The teacher gives a very thorough explanation of numerical or quantitative data being anything where the answer to a question would be a number. Whereas any other answer might be considered categorical. She shows several different ways...
Virtual Nerd
Virtual Nerd: How Do You Find the Mean of a Data Set?
Mean is another word for average. Learn how to determine the mean from a set of data. Watch this tutorial for an example. [3:13]
Virtual Nerd
Virtual Nerd: What Is the Mean of a Data Set?
Mean is the same thing as average when referring to a set of data. Watch this tutorial for an explanation and example. [4:05]
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]
Khan Academy
Khan Academy: Algebra: Average or Central Tendency:arithmetic Mean, Median, Mode
Video explains the different measures of center: arithmetic mean, median, and mode. Gives examples of finding each measure of central tendency and discusses the effect of outliers on each. Includes a link to additional practice problems....
Khan Academy
Khan Academy: Statistics: Inferring Population Mean From Sample Mean
Explanation of the difference between population and sample mean. Includes notation and reasons for using sample mean to infer information about a population. [10:02]
PBS
Pbs Learning Media: Real Life Math: Baseball
Watch and listen as the assistant general manager of a major league baseball team explains how he uses math in this video from KAET, Arizona PBS. A lesson plan and handouts are included. [7:43]
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: 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."
National Science Foundation
National Science Foundation: Science of Nhl Hockey: Statistics & Averages
In order to be the best at their game, an NHL goalie must understand the statistics of their performance, and of their competition, e.g., the goalie save percentage and the goals against average. [5:56]