Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

what is the standard defination of physics ? also what is meant by mean absolute error?
Asked by | 17 May, 2012, 02:59: PM
answered-by-expert Expert Answer
(Physics / General Physics) the branch of science concerned with the properties of matter and energy and the relationships between them. It is based on mathematics and traditionally includes mechanics, optics, electricity and magnetism, acoustics, and heat. Modern physics, based on quantum theory, includes atomic, nuclear, particle, and solid-state studies. It can also embrace applied fields such as geophysics and meteorology
 

the mean absolute error (MAE) is a quantity used to measure how close forecasts or predictions are to the eventual outcomes. The mean absolute error is given by

As the name suggests, the mean absolute error is an average of the absolute errors , where  is the prediction and  the true value. Note that alternative formulations may include relative frequencies as weight factors.


Answered by | 17 May, 2012, 04:56: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
the dimension of stopping potential vo in photoelectric effect in units of plank's constant 'h',speed of light 'c' and gravitational constant 'G' and ampereA
Asked by derhebha955 | 03 Apr, 2024, 09:03: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
In this que while solving it we take D F of alpha =D.F of beta.Why is it so?
question image
Asked by sumedhasingh238 | 29 Mar, 2024, 05:15: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
In physics if 2 quantities are dimensionless then their dimensional formula are equal?
Asked by sumedhasingh238 | 28 Mar, 2024, 11:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Power unit
Asked by rosysahu678 | 02 Mar, 2024, 06:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
frequency of vibration (n) of a stretched string depends on its length (l) , tension (t) and linear mass density taking proportionality constant k=½ find a relation between them
Asked by ss4172380 | 14 Nov, 2023, 08:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Calculate the wave number of a wave with a frequency of 6.2 *10^7
Asked by doddisriman | 29 Oct, 2023, 09:43: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
name to fundamental forces in nature
question image
Asked by sanketnaik338 | 04 Oct, 2023, 09:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Calculate the angle of (a) , 1°(b) 1`(minute of arc or arcmin) and (c) 1``(second of arc second) in radius. Use 360°=2π rad, 1°=60` and 1`=60``.
Asked by mayankvaram96 | 01 Oct, 2023, 06:01: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
The respective number of significant figures for the numbers 23.023; 0.0003 and 2.1´10-3 are (a) 4, 4, 2                     (b) 5, 1, 2                     (c) 5, 1, 5                     (d) 5, 5, 2
Asked by Naveensharma2007 | 26 Jun, 2023, 06:54: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
if the momentum of body decreases by 30% its kinetic energy decreased by
question image
Asked by bhargavchary19 | 23 Dec, 2022, 07:33: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×