Definitions
Estimation
Accuracy/Precision
Sig. Figs/Addition/Subtraction
/Multiplication
/Multiplication
Mean, Median, Mode, Range
100
________ is how close a measurement is to the true or accepted value.
What is precision?
100
An estimate is or is not a guess?
What is is not?
100
True or False: Accuracy refers to how close a measurement is to the true or accepted value.
What is true?
100
Significant figures communicate how _________measurements are.
What is precise?
100
The _______ is the numerical average of a set of data.
What is mean?
200
________ is an approximation of a number based on reasonable assumptions.
What is an estimate?
200
Scientists rely on estimates when they can not obtain
_________ _________.
What is exact measurements?
200
True or False: Precision refers to how close a group of measurements are to each other.
What is true?
200
How many digits there are in a measurement indicates how _________ a measurement is.
What is exact?
200
THe first step in finding the median, list all of the numbers in order from ________to _________.
What is least to greatest?
300
Precision is how close a group of __________ are to each other.
What are measurements?
300
Estimates may be based on indirect measurements, ____________, and models.
What are calculations?
300
What is neither accurate or precise?
300
How many significant figures are in the measurement 22.6 cm?
What is 3?
300
The _______is the number that appears most often in a list of numbers.
What is the mode?
400
______________ are data that do not fit with the rest of the data set.
What is anomalous data?
400
Estimating from a __________ is a quick way to determine a large number of objects.
What is a sample?
400
How can you be sure that a measurement is both accurate and precise? (3 items in the answer)
What is, use a high-quality, measurement tool, measure carefully, and repeat the measurement a few times?
400
Suppose you add a tile that is 2.4 centimeters long to a row of tiles that is 32.15 centimeters long.
Find the length of the new row with significant figures.
What is 34.5 cm?
400
Find the range of the following numbers:
40. 54, 99, 02, 14, 12, 89, 44, 27, 33, 05
What is 97?
(Greatest value - least value)
500
A calculation used to determine how accurate an experimental value is ______________.
What is percent error?
500
You take a sample of snails by making a grid with 6 squares. You have calculated a sample size of 64. What is the total number of snails?
What is 384?
500
What is accurate and precise?
500
When you _________ measurements, the answer should only have the same number of significant figures as the measurement with the fewest significant figures.
What is multiply?
500
Find the median: 12, 10, 16, 18.
What is 14?
When there is an even # of entries, add the two middle #'s and divide by 2.