QuestionTest 10 fridge temperatures: . Is it accurate (yes/no) and precise (yes/no)?
Studdy Solution
STEP 1
Question: How do you calculate the mean of a dataset?
A) Multiply all the numbers together and then divide by the number of numbers.
B) Add all the numbers together and then divide by the number of numbers.
C) Subtract all the numbers from the highest number and then divide by the number of numbers.
D) Divide all the numbers by the lowest number and then add them together.
Answer: B) Add all the numbers together and then divide by the number of numbers.
STEP 2
Question: What is the mean of the given temperature readings: 37.8,38.3,38.1,38.0,37.6,38.2,38.0,38.0,37.4,38.3?
A) 38.0
B) 37.5
C) 38.07
D) 37.2
Answer: C) 38.07
STEP 3
Question: How do you calculate the standard deviation of a dataset?
A) Square each number, subtract the mean, and then square root the result.
B) Subtract the mean from each number, square the result, add them all together, divide by the number of numbers minus 1, then square root the result.
C) Add all the numbers together, divide by the number of numbers, then square root the result.
D) Subtract the mean from each number, add them all together, then square root the result.
Answer: B) Subtract the mean from each number, square the result, add them all together, divide by the number of numbers minus 1, then square root the result.
STEP 4
Question: What is the standard deviation of the given temperature readings: 37.8,38.3,38.1,38.0,37.6,38.2,38.0,38.0,37.4,38.3?
A) 0.5
B) 0.28
C) 0.1
D) 0.07
Answer: B) 0.28
STEP 5
Question: Based on the mean (38.07) and standard deviation (0.28) of the temperature readings, are the readings accurate and precise?
A) The readings are accurate but not precise.
B) The readings are precise but not accurate.
C) The readings are both accurate and precise.
D) The readings are neither accurate nor precise.
Answer: C) The readings are both accurate and precise.
Was this helpful?
