# Personal Career & Learning Guide for Data Analyst, Data Engineer and Data Scientist

Excel is a powerful tool that can help data analysts organize and analyze large amounts of data. One of the many things that data analysts need to do is keep track of the number of times a certain value appears in a list. This can be especially useful when working with large data sets, as manually counting the number of occurrences of a value can be time-consuming and error-prone.

To make this process easier, Excel provides several functions that allow data analysts to quickly find the number of times a certain value appears in a list. One of these functions is called “COUNTIF”, which can be used to count the number of times a certain value appears in a range of cells. Another function is called “SUMIF”, which can be used to add up the values in a range of cells based on certain criteria.

In this article, we’ll be discussing how to use the “COUNTIF” function to keep a running count of the number of times a certain value appears in a list. To do this, we’ll be using a simple example to illustrate the process. Let’s say that we have a list of 100 names, and we want to find out how many times the name “John” appears in the list.

To start, we’ll need to organize our data into a table in Excel. This table should include all the names that we want to count, and we’ll use the “COUNTIF” function to find the number of times “John” appears in the list. The “COUNTIF” function takes two arguments: the range of cells that you want to count, and the criteria that you want to use to count the values. In our example, the range of cells that we want to count is the list of names, and the criteria is the name “John”.

Once we have our data organized and have used the “COUNTIF” function to find the number of times “John” appears in the list, we can then use the result to keep a running count of the number of times “John” appears in the list. To do this, we’ll need to create a new column in our table and use the “COUNTIF” function to find the number of times “John” appears in each group of cells. We’ll then use the results from each group of cells to add up the total number of times “John” appears in the list.

In conclusion, keeping a running count of the number of times a certain value appears in a list is a common task for data analysts. By using the “COUNTIF” function in Excel, data analysts can quickly and easily find the number of times a certain value appears in a list, and use the result to keep a running count of the number of times that value appears. Whether you’re a seasoned data analyst or just starting out, learning how to use the “COUNTIF” function in Excel is a skill that’s well worth mastering.

# Excel Example for Data Analyst – Running count of occurrence in list

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