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Bones are stronger than steel of the same weight.

Weight for weight, bone is remarkably strong, especially under compression, because of its mix of collagen and mineral.

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Excel

Excel formulas, unusual formula combinations, VBA, Power Query and dashboards — from basics to clever tricks.

FREQUENCY Function in Excel: Count Values Into Bins

FREQUENCY Function in Excel: Count Values Into Bins featured illustration

16 Mar 2026 · Excel Functions A–Z · 1 min read

FREQUENCY Function in Excel: Count Values Into Bins

FREQUENCY counts how many values fall into each bin — the data behind a histogram.

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16 March 2026 by Atul Vij Excel Functions A–Z, Statistical Leave a comment

RANK.EQ Function in Excel: Rank a Number in a List

RANK.EQ Function in Excel: Rank a Number in a List featured illustration

16 Mar 2026 · Excel Functions A–Z · 1 min read

RANK.EQ Function in Excel: Rank a Number in a List

StatisticalLevel: IntermediateAvailable in: Excel 2010+RANK.EQ returns the position of a number in a list. Ties share the same rank.Syntax=RANK.EQ(number.

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16 March 2026 by Atul Vij Excel Functions A–Z, Statistical Leave a comment

Charts Lesson 5: Dynamic Charts With Drop-Downs

Charts Lesson 5: Dynamic Charts With Drop-Downs featured illustration

15 Mar 2026 · Charts & Dashboards · 1 min read

Charts Lesson 5: Dynamic Charts With Drop-Downs

Make one chart that changes with a drop-down: data validation list, INDEX/XLOOKUP helper range, chart on the helper, and dynamic titles linked to a…

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15 March 2026 by Atul Vij Charts & Dashboards Leave a comment

CUBEKPIMEMBER Function in Excel: KPI Value From a Data Model

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15 Mar 2026 · Cube · 1 min read

CUBEKPIMEMBER Function in Excel: KPI Value From a Data Model

CUBEKPIMEMBER returns a KPI property (value, goal, status, trend) from an OLAP cube or Power Pivot model. Cube functions read from a Power Pivot…

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15 March 2026 by Atul Vij Cube, Excel Functions A–Z Leave a comment

VBA Collections and Dictionaries: Unique Lists, Counts and Fast Lookups

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15 Mar 2026 · Excel VBA · 4 min read

VBA Collections and Dictionaries: Unique Lists, Counts and Fast Lookups

Excel VBA course lesson 14: when to use a Collection or a Scripting.Dictionary, build unique lists, count and total by key, look up values…

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15 March 2026 by Atul Vij Excel VBA Leave a comment

VBA UserForms for Beginners: Build a Data-Entry Form Step by Step

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14 Mar 2026 · Excel VBA · 4 min read

VBA UserForms for Beginners: Build a Data-Entry Form Step by Step

Excel VBA course lesson 13: design a UserForm, fill combo boxes from a sheet, validate inputs, write a new row to a table, and…

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14 March 2026 by Atul Vij Excel VBA Leave a comment

AVERAGEIFS Function in Excel: Average With Multiple Conditions

AVERAGEIFS Function in Excel: Average With Multiple Conditions featured illustration

14 Mar 2026 · Excel Functions A–Z · 1 min read

AVERAGEIFS Function in Excel: Average With Multiple Conditions

StatisticalLevel: IntermediateAvailable in: Excel 2007+AVERAGEIFS averages values where all conditions are true.Syntax=AVERAGEIFS(average_range.

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14 March 2026 by Atul Vij Excel Functions A–Z, Statistical Leave a comment

REDUCE Function in Excel: Boil an Array Down to One Result

REDUCE Function in Excel: Boil an Array Down to One Result featured illustration

14 Mar 2026 · Excel Functions A–Z · 1 min read

REDUCE Function in Excel: Boil an Array Down to One Result

REDUCE is SCAN that returns only the final result — useful for repeated clean-up steps.

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14 March 2026 by Atul Vij Excel Functions A–Z, Logical Leave a comment

VBA Events: Macros That Run by Themselves (Worksheet_Change and More)

VBA Events: Macros That Run by Themselves (Worksheet_Change and More) featured illustration

13 Mar 2026 · Excel VBA · 4 min read

VBA Events: Macros That Run by Themselves (Worksheet_Change and More)

Excel VBA course lesson 12: Workbook_Open, Worksheet_Change, SelectionChange and BeforeSave events — timestamps when a cell is edited, auto-uppercase codes, validation, and how to…

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13 March 2026 by Atul Vij Excel VBA Leave a comment

Excel Lesson 9: Your First Charts

Excel Lesson 9: Your First Charts featured illustration

13 Mar 2026 · Excel Formulas · 3 min read

Excel Lesson 9: Your First Charts

Pick the right chart for the job, build column, line, pie and combo charts in seconds, add titles and data labels, change the chart…

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13 March 2026 by Atul Vij Excel Formulas Leave a comment

VBA Worksheets and Workbooks: Add, Copy, Loop, Save Safely

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12 Mar 2026 · Excel VBA · 4 min read

VBA Worksheets and Workbooks: Add, Copy, Loop, Save Safely

Excel VBA course lesson 11: refer to workbooks and sheets without ActiveSheet bugs, loop through every sheet, add and rename sheets, copy sheets to…

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12 March 2026 by Atul Vij Excel VBA Leave a comment

DELTA Function in Excel: Are Two Numbers Equal?

DELTA Function in Excel: Are Two Numbers Equal? featured illustration

12 Mar 2026 · Engineering · 1 min read

DELTA Function in Excel: Are Two Numbers Equal?

DELTA returns 1 if two numbers are equal and 0 otherwise — easy to SUM for a count of matches.

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12 March 2026 by Atul Vij Engineering, Excel Functions A–Z Leave a comment

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