Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
898 views
in Aptitude by (115k points)
closed by
The variance of 7, 7, 7, 7, 7 is
1. 7
2. 0
3. 3
4. 4

1 Answer

0 votes
by (114k points)
selected by
 
Best answer
Correct Answer - Option 2 : 0

Given:

The variance of 7, 7, 7, 7, 7

Formula used:

Variance = summation (x - x̅ )2/number of observation

Calculation: 

According to the question,

Mean = (7 + 7 + 7 + 7 + 7)/2

⇒ x̅  = 35/5 = 7

All observation are same then summation (x - x̅ ) = 0

Variance = 0/5

⇒ 0

∴ The variance of 7, 7, 7, 7, 7 is 0.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...