Accuracy & Precision
How close a measurement is to the true or accepted value.
What is Accuracy?
The probability of flipping a coin and getting heads.
What is 1/2?
The probability of two or more events happening together.
What is compound probability?
The average of all data values.
What is mean?
A way to show how data values are spread out.
What is distribution?
How close repeated measurements are to each other.
What is Precision?
The probability of rolling a 3 on a standard 6-sided die.
What is 1/6?
For independent events, this is the formula used.
What is P(A and B) = P(A) x P(B)?
The middle number when data is arranged in order.
What is median?
This is the shape of normal distribution.
What is a bell shaped curve?
Measurements that are close to each other, but all far from the true value.
What is precise, but not accurate?
The probability of getting red when a bag has 3 red, 2 blue, and 5 yellow marbles.
What is 3/10?
This is the probability of flipping a coin and rolling a 4 on a die.
What is (1/2) x (1/6) = 1/12?
The number that appears most often.
What is mode?
In a normal distribution, this is where most data points fall.
What is near the mean (center)?
A student measures a length five times and gets 12.1 cm each time. The true length is 10.0 cm. Describe the results.
What is precise, but not accurate?
The probability of getting a heart when you draw one card from a deck.
What is 13/52 or 1/4?
You pick a marble (3 red, 2 blue), replace it, and pick again. This is the probability of getting a red then a blue.
What is (3/5) x (2/5) = 6/25?
The mean of: 4, 6, 8, 10.
What is (4 + 6 + 8 + 10) รท 4 = 7 ?
This is the name that you give data that is far from all of the other data on a curve.
What is an outlier?
On a dartboard, if all darts land close to the bullseye the bullseye and to each other, what does that show?
What is accurate and precise?
The probability of spinning a blue or yellow on a spinner that has 4 equal sections (red, blue, green, yellow).
What is 2/4 or 1/2?
A jar contains 5 blue, 4 red, and 3 green marbles.
You draw two marbles with replacement.
This is the probability that neither of the marbles are blue?
What is (7/12) x (7/12) = 49/144?
The median and mode of: 3, 7, 7, 9, 11, 11, 11
What is Median = 9; Mode = 11 ?
In a bell curve, if the mean = 70 and the standard deviation = 10, the range includes most of the data between these two numbers.
What is between 60 and 80?