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A student measures the length of a rod multiple times and records values of 10.1

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Question: A student measures the length of a rod multiple times and records values of 10.1 cm, 10.2 cm, and 10.0 cm. What is the average length of the rod?

Options:

  1. 10.0 cm
  2. 10.1 cm
  3. 10.2 cm
  4. 10.3 cm

Correct Answer: 10.1 cm

Solution: 

Average length = (10.1 + 10.2 + 10.0) / 3 = 10.1 cm.

A student measures the length of a rod multiple times and records values of 10.1

Practice Questions

Q1
A student measures the length of a rod multiple times and records values of 10.1 cm, 10.2 cm, and 10.0 cm. What is the average length of the rod?
  1. 10.0 cm
  2. 10.1 cm
  3. 10.2 cm
  4. 10.3 cm

Questions & Step-by-Step Solutions

A student measures the length of a rod multiple times and records values of 10.1 cm, 10.2 cm, and 10.0 cm. What is the average length of the rod?
  • Step 1: Write down all the measured values of the rod's length: 10.1 cm, 10.2 cm, and 10.0 cm.
  • Step 2: Add all the measured values together: 10.1 + 10.2 + 10.0.
  • Step 3: Calculate the total: 10.1 + 10.2 = 20.3, then 20.3 + 10.0 = 30.3.
  • Step 4: Count how many measurements you have. In this case, there are 3 measurements.
  • Step 5: Divide the total length by the number of measurements: 30.3 / 3.
  • Step 6: Calculate the average: 30.3 divided by 3 equals 10.1 cm.
  • Averaging Measurements – The process of calculating the mean of a set of numerical values to determine a central tendency.
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