1.2 Study Guide

Question 1

List all the base units for measurement and what they measure

Answer 1

Mass = Grams, measures the amount of matter in an object.
Volume = Liters, measures how much space an object takes up.
Length = Meters
Time = Seconds
Temperature = Kelvin, measures the energy that particles have.

Question 2

Convert 17 kg to cg

Answer 2

1,700,000

Question 3

How many decimal places should be counted in 10 cm, 1 cm, and 0.1 cm rulers?

Answer 3

None for 10 cm, the tenths should be counted for 1 cm, and the hundredths should be counted for 0.1 cm.

Question 4

How to calculate mean, median, and standard deviation

Answer 4

To calculate mean, add all the values together, then divide them by the amount in the group of numbers.
To find the median, look for the center number or two numbers in the group of numbers, if there are two, find the mean between those two.
To find standard deviation, find the mean of all the numbers, then find the variance of each value from the mean and square and add them all together before dividing them by the amount, then find the square root of the variance for the standard deviation.

Question 5

What axes do the dependent and independent variables separately go on?

Answer 5

The dependent variable always goes on the y axis, and the independent variable goes on the x axis.

Question 6

What are direct, indirect, constant, non-linear, and peak variable relationships in graphs?

Answer 6

Direct relationships are when both the dependent and independent variables are steadily increasing together.
Indirect relationships are when one variable increases, the other decreases.
Constant relationships are when the independent variable does not affect the dependent variable at all.
Non-linear relationships are when the variables plotted on the graph cannot be accurately represented with a straight line.
Peak relationships are when the dependent variable increases sharply, then immediately decreases, forming a “peak” in the graph.

Question 7

What is the standard deviation of the numbers 20, 30, 26, 22, and 32

Answer 7

About 4.56

Question 8

What symbols go with what prefixes?

Answer 8

k (kilo-), c (centi-), m (milli-), upside down h (micro), n (nano), p (pico)