The image above represents mean.

To compute for mean, two essential parameters are needed and these are **number of possible outcomes in any single trial (n) **and **probability of success in any single trial (p).**

The formula for calculating mean:

μ = np

Where;

μ = Mean

n = Number of Possible Outcomes in Any Single Trial

p = Probability of success in any single trial

Let’s solve an example;

Find the mean when the number of possible outcomes in any single trial is 8 and the probability of success in any single trial is 1.

This implies that;

n = Number of Possible Outcomes in Any Single Trial = 8

p = Probability of success in any single trial = 1

μ = np

μ = (8)(1)

μ = 8

Therefore, the **mean** is **8.**

**Calculating for the Number of Possible Outcomes in Any Single Trial when the Mean and the Probability of Success in Any Single Trial is Given.**

n = ^{μ} / _{p}

Where;

n = Number of Possible Outcomes in Any Single Trial

μ = Mean

p = Probability of Success in Any Single Trial

Let’s solve an example;

Find the number of possible outcomes in any single trial when the mean is 15 and the probability of success in any single trial is 1.

This implies that;

μ = Mean = 15

p = Probability of Success in Any Single Trial = 1

n = ^{μ} / _{p}

n = ^{15} / _{1}

n = 15

Therefore, the **number of possible outcomes in any single trial **is **15.**

**Calculating for the Probability of Success in Any Single Trial when the Mean and the Number of Possible Outcomes in Any Single Trial is Given.**

p = ^{μ} / _{n}

Where;

p = Probability of Success in Any Single Trial

μ = Mean

n = Number of Possible Outcomes in Any Single Trial

Let’s solve an example;

Given the mean is 4 and the number of possible outcomes in any single trial is 2. Find the Probability of success in any single trial?

This implies that;

μ = Mean = 4

n = Number of Possible Outcomes in Any Single Trial = 2

p = ^{μ} / _{n}

p = ^{4} / _{2}

p = 2

Therefore, the **probability of success in any single trial **is **2.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the mean.

To get the answer and workings of the mean using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Probability**** **under **Mathematics****.**

Now, Click on **Mean**** **under **Probability**

The screenshot below displays the page or activity to enter your values, to get the answer for the mean according to the respective parameters which are the **number of possible outcomes in any single trial (n) **and **probability of success in any single trial (p).**

Now, enter the values appropriately and accordingly for the parameters as required by the **number of possible outcomes in any single trial (n) **is **8 **and **probability of success in any single trial (p)** is **1**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the mean and presents the formula, workings and steps too.