First slide

Accuracy; precision of instruments and errors in measurements

Question

The diameter of a wire as measured by screw gauge was found to be 2.620, 2.625, 2.630, 2.628 and 2.626 cm. Calculate mean value of diameter.

Easy

A

$3.626 cm$
B

$4.626 cm$
C

$2.626 cm$
D

$1.626 cm$

Solution

Mean value of diameter,
$a_{m} = \frac{2.620 + 2.625 + 2.630 + 2.628 + 2.626}{5}$
$= 2.6258 cm$
$= 2.626 cm$ (rounding off to three decimal places)

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App