1.2 Study Guide Flashcards
How do you calculate Standard Deviation
(1) Find the mean
(2) Find the variance
(3) Find SD- Square root
(4) Use formula
Define the mean
The average of all the numbers is the given data set
What does length measure
The distance between two points
What does mass measure
Amount of matter in an object
What does volume measure
The amount of space an object takes up
What does time measure
The duration between two intervals
What does temperature measure
The degree of hotness
Unit for length
Meters
Unit for mass
Kilograms
Unit for volume
Liters
Unit for time
Seconds
Unit for temperature
Kelvin/Celsius
What is a qualitative observation
Describes a characteristic (Ex: he is tall)
What is a quantitative observation
Involves measurement or count (Ex: he is 6’5)
How to calculate the variance
Take each difference, square it, then average the result
What is a dependent variable
What you measure that is being affected during a lab
What is an independent variable
Is not changed by other factors
Where does the independent variable go on a graph
X-axis
Where does the dependent variable go on a graph
Y-axis
What data line goes diagonal upwards
Direct line
What data line goes diagonal downwards
Indirect line
What data line stays the same throughout the chart
Constant line
What line is not a straight line or curved
Non-linear line
What line has a drastic high point then comes back down
Peak line
How many mm are in 5.2 nm
0.0000052 mm
