Solutions for Data Science

  The  Analysis ToolPak  is an  Excel add-in  program that provides data analysis tools for financial, statistical and engineering data analysis. To load the Analysis ToolPak add-in, execute the following steps. 1. On the File tab, click Options. 2. Under Add-ins, select Analysis ToolPak and click on the Go button. 3. Check Analysis ToolPak and click on OK. 4. On the Data tab, in the Analysis group, you can now click on  Data Analysis . The following dialog box below appears. 5. For example, select Histogram and click OK to create a Histogram in Excel. Example Rank and Percentile The Rank and Percentile contained within the Analysis-ToolPak can be quickly used to find the rank of all the values in a list. The advantage of using the Rank and Percentile feature is that the percentile is also added to the output table. The percentile is a percentage that indicates the proportion of the list which is below a given number. Highlight the list (or the cells) which...

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You can do a sort of fuzzy match with VLOOKUP. If you aren‘t sure if your lookup table will contain Red , Red  Masala , or Red Masala Pvt , you can use  =VLOOKUP("Red*",Table,2,False) , and Excel will find the first item in the lookup table that starts with  Red .

MAXIFS One of the new Office 365 functions added in February 2016 is the MAXIFS function. This function, which is similar to SUMIFS, finds the largest value that meets one or more criteria: You can either hard-code the criterion as in row 7 below or point to cells as in row 9. A similar MINIFS function finds the smallest value that meets one or more criteria. While most people have probably heard of MAX and MIN, but how do you find the second largest value? Use LARGE (rows 2 and 3) or SMALL (rows 4 and 5). What if you need to sum the top seven values that meet criteria? The orange box below shows how to solve with the new Dynamic Arrays. The green box is the  Ctrl+Shift+Enter  formula required previously.

The use of worksheet protection in Excel is a little strange. Using the steps below, you can quickly protect just the formula cells in your worksheet. It seems unusual, but all 16 billion cells on a worksheet start out with their Locked property set to True. You need to unlock all of the cells first: Select all cells by using the icon above and to the left of cell A1. Press  Ctrl+1  (that is the number 1) to open the Format Cells dialog. In the Format Cells dialog, go to the Protection tab. Uncheck Locked. Click OK. While all cells are still selected, select Home, Find & Select, Formulas. At this point, only the formula cells are selected. Press  Ctrl+1  again to display the Format Cells dialog. On the Protection tab, choose Locked to lock all of the formula cells. Locking cells does nothing until you protect the worksheet. On the Review tab, choose Protect Sheet. In the Protect Sheet dialog, choose if you want people to be able to select your formula cells or no...

3D Maps ( Power Map) is available in the Office 365 versions of Excel 2013 and all versions of Excel 2016. Using 3D Maps, you can build a pivot table on a map. You can fly through your data and animate the data over time. 3D Maps lets you see five dimensions: latitude, longitude, color, height, and time. Using it is a fascinating way to visualize large data sets. 3D Maps can work with simple one-sheet data sets or with multiple tables added to the Data Model. Select the data. On the Insert tab, choose 3D Map. (The icon is located to the right of the Charts group.) If you have Excel 2013 you might have to download Power Map Preview from Microsoft to use the feature. Next, you need to choose which fields are your geography fields. This could be Country, State, County, Zip Code, or even individual street addresses. You are given a list of the fields in your data set and drop zones named Height, Category, and Time. Hover over any point on the map to get details such as last sale date and a...

Excel 2013 added a new data-cleansing tool called Flash Fill. In the figure below, you see full names in column A. You want to get the person’s first initial and last name in column B. Rather than try to puzzle out  =PROPER(LEFT(A2,1)&" "&MID(A2,FIND(" ",A2)+1,50)) , you simply type a sample of what you want in B2. Type the first initial in B3. Excel sees what you are doing and “grays in” a suggested result. Press  Enter  to accept the suggestion. Bam! All of the data is filled in. Look carefully through your data for exceptions to the rule. Two people here have middle initials listed. Do you want the middle initials to appear? If so, correct the suggestion for Dennis P. Jancsy in cell B4. Flash Fill will jump into action and fix Martha K. Wendel in B9 and any others that match the new pattern. The status bar will indicate how many changes were made. In the above case, Excel gurus could figure out the formula. But Flash Fill is easier. In the example shown b...

Sometimes, you want to see many different results from various combinations of inputs. Provided that you have only two input cells to change, the Data Table feature will do a sensitivity analysis. Using the loan payment example, say that you want to calculate the price for a variety of principal balances and for a variety of terms. Make sure that the formula you want to model is in the top-left corner of a range. Put various values for one variable down the left column and various values for another variable across the top. From the Data tab, select What-If Analysis, Data Table.... You have values along the top row of the input table. You want Excel to plug those values into a certain input cell. Specify that input cell for Row Input Cell. You have values along the left column. You want those plugged into another input cell. Specify that cell for the Column Input Cell. When you click OK, Excel repeats the formula in the top-left column for all combinations of the top row and left colum...