 Hi this is Dr. Don and I want to show you how to activate the data analysis tool pack in Excel. Now this is for PCs it's a little different if you're doing it on a Mac and if you're on a Mac you may not even have the analysis tool pack depending upon the version of Excel you have. Okay here's your Excel you click on the data tab and you look over here and you don't see data analysis that tells you that it's not activated. Let's go to file click on file go down to options and then we're going to click on add ends and then down at the bottom make sure Excel add ends is selected in the drop down and then click go and you get this dialog box that lists available add ends you should see the analysis tool pack listed there and if it doesn't have a check mark which this doesn't click it to put a check mark and click okay and then the data analysis option will show up over here under the data tab the data ribbon you can click data analysis and there are the tools and among them is the histogram tool right there so I hope this helps