Using Math to Analyze Data Answers

In an investigation on accuracy and precision, Myriah measures the mass of a 10.00 g piece of metal several times. Her measurements are 9.98 g, 10.02 g, 10.01 g, and 9.99 g. Which statement best describes her results?

Which of the following best specifies the purpose of error bars on a graph?

Rob measures the solubility of three different salts in water at 22°C. Which type of graph should he use to display his data?

Error bars on four different data points are shown below.Which of these data points is the most reliable?

Jose’s lab instructor gives him a solution of sodium phosphate that is buffered to a pH of 4. Because of an error that he made while calibrating the pH meter, Jose’s measurements of the pH of the sodium phosphate solution are 5.4, 5.4, and 5.4. Which statement best describes his results?

A tree farm sells trees based on height in increments of 10 feet. Which graph would best show the current stock of trees?

A ruler has markings as shown below. Stefan uses this ruler to measure the length of a metal rod. How many decimal places should his answer include?

Which best describes accuracy?

Precision can be defined as the

Which property of a measurement is best estimated from the percent error?