# Density accuracy and precision lab

For example, if on average, your measurements for a given substance are close to the known value, but the measurements are far from each other, then you have accuracy without precision. A good analogy for understanding accuracy and precision is to imagine a basketball player shooting baskets.

A good player will be both accurate and precise by shooting the ball the same way each time and each time making it in the basket. Using the example above, if you weigh a given substance five times, and get 3.

Precision is independent of accuracy.

If the player shoots with accuracy, his aim will always take the ball close to or into the basket. In this case, your measurement is not close to the known value. Precision refers to the closeness of two or more measurements to each other.

You can also be accurate but imprecise. If the player shoots with accuracy, his aim will always take the ball close to or into the basket. For example, if on average, your measurements for a given substance are close to the known value, but the measurements are far from each other, then you have accuracy without precision.

For example, if in lab you obtain a weight measurement of 3. You can also be accurate but imprecise. Accuracy refers to the closeness of a measured value to a standard or known value.

Using the example above, if you weigh a given substance five times, and get 3. In this case, your measurement is not close to the known value.

If the player shoots with precision, his aim will always take the ball to the same location which may or may not be close to the basket. If the player shoots with precision, his aim will always take the ball to the same location which may or may not be close to the basket.

A good player will be both accurate and precise by shooting the ball the same way each time and each time making it in the basket. Accuracy refers to the closeness of a measured value to a standard or known value.

A good analogy for understanding accuracy and precision is to imagine a basketball player shooting baskets. Precision refers to the closeness of two or more measurements to each other. For example, if in lab you obtain a weight measurement of 3. You can be very precise but inaccurate, as described above.

Precision is independent of accuracy. You can be very precise but inaccurate, as described above.Experiment #2 – Measurements, Accuracy, and Precision Laboratory Overview CHEM August Department of Physical Sciences Cameron University.

PowerPoint Notes Each lab will be accompanied by a short PowerPoint presentation showing some of the basic ideas of the lab.

•Density Background •Accuracy and Precision •Basic. Abstract- Expirement 1: Precision, Accuracy, and Density Measurements This experience is intended to introduce the proper use of the most used laboratory equipments and glasswear that is come upon in the lab.

Chemistry Lab 1: Measurement and Density Objectives: a. Determine the relative precision and accuracy of different glassware items. b.

Determine the density of a solid sample by two methods Skills: Practice basic measurement techniques of. Lab Report 4: Defining Accuracy, Precision and Trueness By Artel | Lab Report Language influences thinking and careful use of words when evaluating data allows us to understand how best to improve laboratory accuracy.

In this lab exercise, students practice correctly using measurement tools, recording data, calculating density, using significant figures, and exploring the concepts of accuracy and precision.

ACCURACY AND PRECISION Definitions: Precision versus Accuracy: Look at each target and decide whether the “hits” are accurate, precise, both accurate 1. While doing a lab, a student found the density of a piece of pure aluminum to be g/cm3.

Density accuracy and precision lab
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