Q84.If the mean deviation about the mean of the numbers 1, 2, 3, โฆ โฆ , ๐, where ๐ is odd, is , then ๐ is equal ๐ to ______.
What This Question Tests
This question assesses the calculation of the mean and mean deviation for an arithmetic progression with an odd number of terms and then solving for 'n' based on the given mean deviation.
Concepts Tested
Formulas Used
Mean (xฬ) = (ฮฃxi) / n
Mean deviation = (ฮฃ|xi - xฬ|) / n
Sum of first n natural numbers = n(n+1)/2
๐ NCERT Sections This Tests
12.7 โ The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 ยท Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3ร10โ11 m. What are the radii of the n = 2 and n =3 orbits?
8.17 โ Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 ยท Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
12.5 โ A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 ยท Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
๐ Question Details
- Chapter
- Statistics
- Topic
- Mean deviation about the mean
- Year
- 2022
- Shift
- 25 Jun Shift 2
- Q Number
- Q84
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 15: Statistics
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