A student measures the length of a rod multiple times and records the values: 10.1 cm, 10.2 cm, 10.0 cm, 10.3 cm. What is the average length of the rod?
Practice Questions
1 question
Q1
A student measures the length of a rod multiple times and records the values: 10.1 cm, 10.2 cm, 10.0 cm, 10.3 cm. What is the average length of the rod?
10.0 cm
10.1 cm
10.2 cm
10.3 cm
Average length = (10.1 + 10.2 + 10.0 + 10.3) / 4 = 10.15 cm.
Questions & Step-by-step Solutions
1 item
Q
Q: A student measures the length of a rod multiple times and records the values: 10.1 cm, 10.2 cm, 10.0 cm, 10.3 cm. What is the average length of the rod?
Solution: Average length = (10.1 + 10.2 + 10.0 + 10.3) / 4 = 10.15 cm.
Steps: 6
Step 1: Write down all the measured lengths of the rod: 10.1 cm, 10.2 cm, 10.0 cm, 10.3 cm.
Step 2: Add all the lengths together: 10.1 + 10.2 + 10.0 + 10.3.
Step 3: Calculate the total: 10.1 + 10.2 = 20.3, then 20.3 + 10.0 = 30.3, and finally 30.3 + 10.3 = 40.6.
Step 4: Count how many measurements there are: There are 4 measurements.
Step 5: Divide the total length by the number of measurements: 40.6 / 4.
Step 6: Calculate the average: 40.6 divided by 4 equals 10.15 cm.
