In statistics, covariance and correlation are measures of how much two random variables change together. A positive number would indicate a positive linear relationship between the variables and a negative number would indicate the opposite.
One of the most useful measures in statistics is that of variance. It is a measure that is used to quantify the amount of variation or dispersion of a set of data values. I’ll try to explain what this means with an example, but there are plenty of other online sources if you want to explore the math behind it.
One of the most useful measures in statistics is that of standard deviation. It is a measure that is used to quantify the amount of variation or dispersion of a set of data values. I’ll try to explain what this means with an example, but there plenty of other online sources if you want to explore the math behind it.
In statistics, the quartiles, of a ranked set of data values, are the three points that divide the set into four equal groups. Each group constitutes a quarter of the data.
We have reached the end of our quest for the best lookup function, where we will talk about the combination of INDEX and MATCH. In the current lesson, we will use INDEX with dual MATCH functions, to achieve a matrix lookup functionality. But you can easily skip one of the two MATCH functions, and replace it with a static value if you are not interested in a matrix lookup.
We will continue our quest for the best lookup formula with another combination. We will use an OFFSET and two MATCH functions to do a matrix lookup. Unfortunately, this formula also only searches from the right column to the left and from the top to the bottom, but is very easy to understand and use.
We will begin a quest to find the best lookup function. All the internal functions of Excel have limitations which we will try to overcome. In this and the following tutorials, the knowledge of the simple syntax of the functions mentioned (VLOOKUP, HLOOKUP, MATCH), is considered a requirement.
From all the lookup functions, LOOKUP is the least useful. Even though it is a powerful function, it is hardly used at all.
When you start learning about the lookup functionality of Excel, HLOOKUP will probably be one of the first functions you will stumble upon.
When you start learning about the lookup functionality of Excel, VLOOKUP will probably be one of the first functions you will stumble upon.
