Easy question: Measurements

Chemistry
Tutor: None Selected Time limit: 1 Day

  1. A group of five students are asked to separately measure the length of a specific paperclip using a ruler. Choose five sets of measurements to indicate the following, given that the actual length of the paperclip is 3.3 cm.

    1. imprecise and inaccurate data

    2. precise but inaccurate data

    3. precise and accurate data 

Sep 29th, 2015

Thank you for the opportunity to help you with your question!

1. Imprecise means that the measurements are not close to each other.  Inaccurate data would mean that the measurements are not close to 3.3cm.

Example: 1cm, 5cm, 3cm, 9cm, 15cm

2. Precise means the data are close to each other, but inaccurate means they are not close to the actual value.

Example: 5cm, 5.2cm, 4.8cm, 5.4cm, 5.1cm

3. Measurements are close to each other and close to actual value.

Example: 3.3cm, 3.1cm, 3.4cm, 3.4cm, 3.2cm


Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 29th, 2015

Oh thank you very much

Sep 29th, 2015

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