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Excel VAR.S Function

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Chala mitrano — today VAR.S. Squared spread of a sample — STDEV.S without the square root.

Fictional sample data for learning. Variance checks for Rajkot QC labs and Glasgow test benches.

Purpose

Sample variance — average squared distance from the mean (sample).

Return value

Sample variance.

Syntax

VAR.S(number1, [number2], …)

Arguments

ArgumentRequired?Description
number1RequiredFirst sample number or range.
number2,…OptionalMore numbers.

Version

Excel 2010+ (older: VAR). LibreOffice / Sheets: VAR.

How to use — Why → What → How

Why: Stat reports sometimes ask for variance, not SD. VAR.S is that number; STDEV.S is its square root. Variance checks for Rajkot QC labs and Glasgow test benches. In Indian back offices and foreign sister teams, VAR.S shows up on scoreboards, QC sheets and queue dashboards every week.

What: VAR.S uses n−1. Square root of VAR.S equals STDEV.S for the same data. Read every argument in the table once before you type; each one changes the answer on purpose.

How — numbered steps:

  1. Type =VAR.S(B2:B20).
  2. Cross-check with STDEV.S^2.
  3. Need ≥2 numbers.

Ravindra Bagale's Tip

Friends, after VAR.S, find one column or range in a real workbook this week where this lesson saves time.

Ravindra Bagale's Tip

Friends, sleep on VAR.S; rebuild example 1 tomorrow without looking.

Ravindra Bagale's Tip

Friends, say the business question in plain words before =VAR.S.

Ravindra Bagale's Tip

Friends, check a known case with a calculator before you trust a long VAR.S chain.

Ravindra Bagale's Tip

Friends, after you finish VAR.S, open yesterday’s real workbook and find one place this function would have saved ten minutes.

Ravindra Bagale's Tip

Friends, treat VAR.S like a seatbelt on number columns — check a known case first.

Download practice file: practice-var-s.xlsx (includes sheet About this data, practice sheets, and Answers).

Worked examples

1) Marks variance

Rajkot.

Marks
72
85
90
85
60
Formula: =VAR.S(A2:A6)

Result: 150.3

What it means: Sample variance of five marks.

2) Tight

Nearly equal.

X
80
81
82
Formula: =VAR.S(A2:A4)

Result: 1

What it means: Variance 1.

3) Glasgow

Scores.

Score
10
20
30
Formula: =VAR.S(A2:A4)

Result: 100

What it means: 100.

4) Link to SD

Check.

X
10
20
Formula: =VAR.S(A2:A3)

Result: 50

What it means: STDEV.S would be √50.

5) One number

Too few.

X
5
Formula: =VAR.S(A2)

Result: #DIV/0!

What it means: Need n≥2.

6) Literals

Quick.

X
1
Formula: =VAR.S(1,2,3)

Result: 1

What it means: 1.

Common errors and fixes

#DIV/0! — n<2. Fix: Add data.
Confused with SD — Report clear labels. Fix: Variance ≠ SD.
Population? — VAR.P. Fix: Whole population.

Notes and tips

  • Revisit the VAR.S errors table after the quiz.
  • Build example 1 from memory on a blank sheet.
  • Check number vs text if a result looks wrong.
  • Teach one tip in Marathi or Hindi this week.
  • Keep currency symbols consistent inside one report column (practice mixes ₹ $ £ €).
  • Drill: variance of three scores and confirm SD with a square root.
  • VAR.S vs STDEV.S: same story, different units — label charts clearly.
  • Fictional sample data only — names and amounts are for learning.
  • Print the VAR.S revision card for one week of real worksheets.
  • Ask juniors to predict before they press Enter.
  • Track your top mistake with this function monthly.
  • Variance checks for Rajkot QC labs and Glasgow test benches.
  • Interview tip: explain the business question before the formula.
  • Classroom drill: invent three brand-new formulas from your city without the page open.
  • If a result looks wrong, check blanks vs zeros before rewriting.
  • When Excel versions differ, note the LibreOffice / Sheets fallback in a cell comment.
  • Prefer clear ranges over whole-column refs on huge sheets if speed matters.
  • Document units (₹, kg, days) in the header so totals stay honest.
  • Print the revision card for VAR.S for one week of real worksheets.
  • When helping a junior, ask them to predict before Enter.
  • Share one tip with a classmate in Marathi or Hindi.
  • Keep currency symbols consistent inside a single report column.
  • Interview tip: explain the business question before the formula.
  • If a result looks wrong, check blanks vs zeros before rewriting maths.
  • When Excel versions differ, write a LibreOffice fallback under a comment.

In real work

Drill: variance of three scores and confirm SD with a square root. Variance checks for Rajkot QC labs and Glasgow test benches. Classroom drill: write three brand-new VAR.S formulas on a blank sheet using names from your own city — if you can invent them without the page open, you own the skill. Then break one formula on purpose and watch the error; recovering from that break is half of interview readiness. Always verify with a known case before trusting a long chain. Keep a personal notebook of the one mistake you make most often with this function; review it monthly.

How it compares

VAR.S vs STDEV.S: same story, different units — label charts clearly.

Interview corner

vs STDEV.S?
Square vs root.
vs VAR.P?
Sample vs population.
n<2?
#DIV/0!.

STDEV.S, AVERAGE, VAR.P

Practice tasks (10)

  1. Task 1. Variance five marks.
    Class.
  2. Task 2. Tight variance.
    1.
  3. Task 3. Glasgow 10,20,30.
    100.
  4. Task 4. Link to SD.
    √.
  5. Task 5. Force #DIV/0!.
    One.
  6. Task 6. Interview.
    Talk.
  7. Task 7. Teach.
    Teach.
  8. Task 8. Literals.
    1,2,3.
  9. Task 9. Fill.
    Fill.
  10. Task 10. Document.
    Note.

Quick quiz

Q1. VAR.S vs STDEV.S?
Q2. n−1 or n?
Q3. n=1?
Q4. √VAR.S equals?
Q5. Population cousin?

Answers: Q1=Variance vs SD, Q2=n−1 sample, Q3=#DIV/0!, Q4=STDEV.S, Q5=VAR.P (check after you try).

Revision card

Standalone card (no tip or photo strip). QR opens this lesson. Download the PNG and revise offline.

Revision card: VAR.S
VAR.S revision card