Here we show some examples of binomial experiments. But before we do so, what is a binomial experiment? When an...

Read More

Find here some normal distribution word problems or some applications of the normal distribution. Example #1 Suppose the current annual...

Read More

Finding the z-scores for a specified area is the reverse procedure of finding the area under the normal curve. You...

Read More

Standardizing a normal distribution is to convert a normal distribution to the standard normal distribution. In real-world applications, a continuous...

Read More

Learn how to calculate the area under the standard normal curve. This is an important skill, so study the following...

Read More

Here is the standard normal distribution table. The entries give the areas under the standard normal curve from 0 to...

Read More

The standard normal distribution (SND) is a special case of the normal distribution. When a normally distributed variable has a...

Read More

The normal probability distribution, also called normal curve, is a special type of bell-shaped curve like the one you see...

Read More

The continuous probability distribution is a table that shows the frequency and relative frequency of a continuous random variable. Recall...

Read More

The mean of the sampling distribution of x̄ (also called mean of x̄) is the mean of all possible sample means....

Read More

This lesson will show the difference between sampling and nonsampling errors. Using a sample in order to get information about...

Read More

As stated in the previous lesson, the population mean is always constant. However, different samples of the same size drawn...

Read More

The population distribution is the probability distribution using all elements of a population. Suppose there are 5 students in a...

Read More

The Poisson probability distribution is named after the French mathematician Simeon D. Poisson. Suppose there is a power outage in...

Read More

Here is a list of the types of averages used in statistics also called or measures of central tendency. We...

Read More

Summation notation is used to denote the sum of values. Suppose you have a sample consisting of the ages of...

Read More

Suppose we are selecting a few items from a large number of distinct items and you are trying to find...

Read More

We define the factorial of a number as the multiplication of all integers from that number to 1. We use...

Read More

The standard deviation of a discrete random variable is denoted by σ and the formula to use to compute it...

Read More

The mean of a discrete random variable x is the average value that we would expect to get if the...

Read More

The probability distribution of a discrete random variable shows all possible values a discrete random variable can have along with...

Read More

Before giving a definition for discrete random variable, let us define random variable. A random variable is a variable that...

Read More

Using the addition rule for probability, we will show you how to find the probability of the union of two...

Read More

When you get the probability of the intersection of two events, we call this probability joint probability. Let A and...

Read More

In this lesson, you will learn to compute the probability of complementary events. What are complementary events though? Let A...

Read More

In this lesson, we will do the following using a table that shows test results for 200 students who took a...

Read More

Just like the Chebyshev's theorem, the empirical rule can also be used to find the percentage of the total observations that fall...

Read More

Chebyshev's theorem will show you how to use the mean and the standard deviation to find the percentage of the...

Read More

Mutually exclusive events are events that cannot occur together. In other words these events do not have any common outcomes....

Read More

To find the conditional probability, we will use the contingency table that we used in the lesson about marginal probability...

Read More

To explain what marginal probability is, we need a contingency table. A contingency table is a table in which we...

Read More

What is probability? How to calculate probability? We will answer these questions here along with some useful properties of probability....

Read More

Before we show you the difference between simple and compound events, we will start with a definition of event. Event...

Read More

A sample space diagram is a diagram used to describe a sample space. But what is a sample space? A...

Read More

The formula for variance and standard deviation for grouped data is very similar to the one for ungrouped data. Below,...

Read More

The difference between parameter and statistic is simple. The mean, median, mode, range, variance, or standard deviation, or any other...

Read More

The standard deviation (SD) tells how far the values of a data set are from the mean. If the standard...

Read More

Measures of dispersion, also called measures of variation, are measures that help us to know about the spread or variation...

Read More

You can find the mean from a frequency table when you don't know the exact values in the classes. Suppose...

Read More

The relationship between the mean, median, and mode is shown with these 3 histograms. Symmetric histogram ...

Read More

#### Most Commented Posts

- Probability of complementary events By Author on August 22, 2016 3
- Standard Deviation By Author on February 22, 2016 2

#### Most Liked Posts

- Variance and standard deviation for grouped data By Author on August 12, 2016 7
- Less than method for writing classes By Author on February 1, 2016 1
- Mode of a data set By Author on February 5, 2016 1

## Recent Comments