Question

The difference between reading and the mean reading is called as ...

Answer 1

Answer:

Reading:

It is the measurement or value taken for an instrument at different trials.(take vernier calliper as example)

Mean reading:

It is the average of the different trials taken in the reading.

Explanation:

The scale reading is the first reading on the main scale immediately to the left of the zero of the vernier scale (3 mm), while the vernier scale reading is the mark on the vernier scale which exactly coincides with a mark on the main scale (0.7 mm). The reading is therefore 3.7 mm.Mean reading means, Let the two values be A and B.Then mean=A+B/2.

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Answer 2

Difference between reading and mean reading is given below.

Explanation:

• Reading is the value of measurement that is taken by using an instrument such as meter rod or meter scale. For example 2 cm , 5 cm 17 cm etc are the values of different readings
• Similarly, Mean reading is the average value of different readings taken in a trial. It is obtained by diving the readings with total number of readings.
• For example the mean reading of the above values  2 cm , 5 cm 17 cm will be
• Mean reading = Reading 1 + Reading 2 + Reading 3 / Total number of readings
• Mean reading = 2 cm + 5 cm + 17 cm / 3 = 24 cm / 3 = 8 cm
• Thus 8 cm is the mean value of reading.