Chemistry intro to accuracy and precision
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The agreement between actual value and that obtained from an experiment is a measure of the ___________________ of the data. | accuracy
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| Which measurement is more precise? 53.7 cm, 31.77 cm, 12 cm | 31.77 cm
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| Liters are a measurement of this quantity | volume
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| This presents infomation in rows and columns making it easier to read and understand | a data table
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| International systems of units related by multiples of ten designed to provide a world wide standard of physical measurement | metric (or SI) system
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| Describes how closely measurement are to each other and how carefully measurements were made | precision
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| This is the Si and metric base unit for length | meter
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| This is the amount of matter in an object is its | mass
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| This is a type of graph used to show the relationship between two variables that are numbers on an x axis and y axis | line graph
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| This is the metric base unit for mass | g
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| This is the metric base unit for temperature | Celsius
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| This is used to collect organized and summarize data in a visual way making it easy to use and understand | graph
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| Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the standard. These results imply that the balance that was used is:accurate, precise, both, or neither? | precise but not accurate
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| Given the following set of measurements: 6.75 kg, 6.80 kg and 6.85 kg, if the true value is 6.80 kg, are the measurements accurate, precise, both, or neither? | accurate and precise
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| True or False: If a measurement is precise, it must also be accurate. | false
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| Kami measured the volume of a liquid three times and got these results: 66.71 mL, 66.70 mL, 66.69 mL. The actual volume of the liquid is 69.70 mL. Was she accurate? | no
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| A basketball player shoots once and gets "nothin' but net". Was she accurate, precise, both, or neither? | accurate, but not precise because she only tried once.
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| This is also called called reproducibility or repeatability. | precision
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
scwitty
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