# 4 WAYS TO SUM DATA BY WEEK NUMBER

Every organization requires weekly summaries to monitor peak and off-peak periods. This is mostly so when you are in the production section. Excel has a beautiful but overlooked function (WEEKNUM) that returns an integer representing the week in the year (1 to 53). For anyone not familiar with WEEKNUM function, it contains 2 arguments; Serial_number ( […]

# VLOOKUP IS DEAD–OR IS IT?

Crispo Mwangi | 20-Jan-18 | 2 Comments

In the year 1882, a German philosopher, Friedrich Nietzsche made a claim that has revolutionalized Philosophical and Theological discussions since then. His Claim–God is Dead. There has been a similar discussion in the Excel world, not about God, but about VLOOKUP. Of all the over 450 functions in Excel, VLOOKUP is one of the most popular […]

# 7 EXCEL TABLES BEST KEPT SECRETS

Crispo Mwangi | 29-Dec-17 | 3 Comments

When was the last time you used excel tables? Do you know how powerful excel tables are? If you have never or not recently used excel tables, it could be because you have not realized how powerful they are in data analysis. By reading below 7 excel table’s secrets, your answer to above question will […]

# 7+ WAYS TO LOOKUP NUMBER VALUES

Crispo Mwangi | 5-Oct-17 | 3 Comments

The ability to lookup number values in excel is a must have for all data analysts. Some Excel users just know the basic VLOOKUP function but there are 7 more functions to lookup values. The more lookup function you know the better you become in retrieving numbers like sales for a certain month, a balance for a […]

# FIND THE LAST OR Nth OCCURENCE IN EXCEL USING MULTIPLE CRITERIA

Crispo Mwangi | 3-Feb-17 | 1 Comment

In the previous article, we looked at 7 ways to find the last or Nth occurrence in a Sorted list in excel. Unsorted list poses a challenge since you need to find the occurrence using multiple criteria. To show the different methods I have created a list of Customers and their Purchase Orders (P.O). You can download […]

# 7 Overlooked Uses of Excel MOD Function

Crispo Mwangi | 7-Jun-16 | 10 Comments

In Over  450 functions in Excel, MOD function is one of the highly overlooked. Generally, MOD function returns the remainder of two numbers after division. Functions like IF, SUM, COUNT, AVERAGE are well known by all excel users. Yet there are some functions like MOD, WEEKDAY, WORKDAY, CHOOSE, DATEDIF, DELTA, SUBSTITUTE, HYPERLINK are rarely used. This […]