Error Margins and Value Ranges

This tutorial covers approximation and errors in measurements. It explains how to calculate the range of values for various measurements, including the length of a stick, the height of a man, the population of Nigeria, the price of a phone, the distance between cities, and the length of a metallic rod. Each problem is solved by determining the error based on the given approximation and calculating the range of values.

What is the main focus of this tutorial?

• Studying the history of mathematics

• Learning about algebraic equations

• Understanding approximation and errors

• Calculating the area of circles

What is the error margin for a measurement of 8 cm to the nearest cm?

• ±2 cm

• ±1 cm

• ±0.5 cm

• ±0.1 cm

What is the range of values for a stick measured at 8 cm to the nearest cm?

• 7.0 cm to 9.0 cm

• 7.8 cm to 8.2 cm

• 7.5 cm to 8.5 cm

• 8.0 cm to 9.0 cm

How do you convert 1.65 m to cm?

• Divide by 10

• Multiply by 10

• Multiply by 100

• Divide by 100

What is the error margin for a height measurement of 1.65 m to the nearest cm?

• ±0.1 cm

• ±0.5 cm

• ±1 cm

• ±2 cm

What is the range of values for the height of a man measured at 1.65 m to the nearest cm?

• 1.645 m to 1.655 m

• 1.640 m to 1.660 m

• 1.635 m to 1.665 m

• 1.650 m to 1.670 m

What is the error margin for the population of Nigeria approximated at 210 million to the nearest million?

• ±0.1 million

• ±0.5 million

• ±1 million

• ±2 million

What is the range of values for the population of Nigeria approximated at 210 million to the nearest million?

• 209.5 million to 210.5 million

• 210.0 million to 211.0 million

• 209.0 million to 211.0 million

• 208.5 million to 211.5 million

What is the error margin for the price of a phone approximated at 30,000 naira to the nearest thousand naira?

• ±100 naira

• ±500 naira

• ±1,000 naira

• ±2,000 naira

What is the range of values for the price of a phone approximated at 30,000 naira to the nearest thousand naira?

• 29,500 naira to 30,500 naira

• 29,000 naira to 31,000 naira

• 28,500 naira to 31,500 naira

• 30,000 naira to 31,000 naira