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Learn to calculate the mean of a discrete random variable with this easy to follow lesson
What is a discrete random variable? What is a random variable? Find the answers to these questions here.
What is the probability distribution of a discrete random variable? Learn it fast here with a great lesson.
Learn how to use the addition rule for probability in order to find the probability of the union of two events
Learn to find the joint probability with this easy to follow lesson
Learn how to find the probability of complementary events with this easy to follow lesson.
Learn to find the probability of independent events with this easy to follow lesson
What are mutually exclusive events? Definition and examples
What is conditional probability? Quickly understand it with this easy to follow lesson.
What is marginal probability? Get a thorough and crystal clear explanation with this lesson created by a former math teacher.
What is probability? Definition, formula, and examples of classical probability, relative frequency of probability, and subjective probability
Learn the difference between simple and compound events with this easy to follow lesson.
What is a sample space diagram? A sample space diagram is a diagram used to describe a sample space.
Statistics made easy - We will provide you with a solid introduction to statistics along with concise and easy to follow lessons
What are percentiles and percentile rank? Definition and formula you can use.
What are quartiles and interquartile range? Definition and examples.
What is empirical rule? Get an answer here quickly with crystal clear explanations. Just like the Chebyshev's theorem, we can use the rule to find....
What is Chebyshev's Theorem? Definition and straightforward examples so you can understand it fast.
Learn about variance and standard deviation for grouped data with an easy to follow lesson.
What is standard deviation? Crystal clear explanation of what the standard deviation is. Learn to calculate it and understand how the formula was derived.
What are measures of dispersion? Explanations and examples.
What is the difference between parameter and statistic? The difference between parameter and statistic is simple as you shall see ...
What is the midrange of a data set? Definition and examples
What is the relationship between the mean, median, and mode?
What is the best measure of center? Learn if you should use the mean, the median, the mode, or the midrange for your statistical data.
Find the mean from a frequency table when you don't know the exact values in the classes.
What is the arithmetic mean? Definition and examples in statistics
Find out how to organize and display data for qualitative and quantitative data using bar graphs, pie graphs, histograms, polygons and stem-and-leaf display.
What is the cumulative frequency distribution? We find the cumulative frequency distribution for a class by adding the frequency of that class to...
Learn about the different shapes of histograms. The three most common of these shapes are skewed, symmetric, and uniform.
Graphs of quantitative data, also called grouped data, can be displayed using a histogram or a polygon. Learn how to make histograms using raw data
Learn to use the less than method for writing classes to make frequency tables, calculate relative frequency, and percentage.
Construction of a frequency distribution table using a guideline and raw data
The procedure for constructing a frequency table for a set of quantitative data is straightforward.
What is a frequency distribution of quantitative data? Learn here with a crystal clear lesson.
Display of qualitative data with bar graphs and pie graphs.
What is the relative frequency? Here is how to find the relative frequency using the frequency distribution table
what is a frequency distribution? A frequency distribution can be used to organize quantitative variables...
What is raw data? Learn the difference between quantitative data and qualitative data
An introduction to statistics as you explore basic terms used in statistics frequently.
Explanation of cross-section data in statistics. A cross-section data shows information about different...
A time-series data shows information about the same subject or element of a sample or population for different periods of time.
Types of variables in statistics - quantitative, qualitative, discrete, continuous, independent, and dependent.
Variable, element, data set, and observation - Learn the meaning of these basic terms in statistics important
Learn the 5 common sampling methods of choosing a sample such as random sample, convenience sample, cluster sample, stratified sample, and systematic sample.