Chapter 1.2 SD and Graphs

Question 1

Steps for standard deviation?

Answer 1

1) Find the mean
2. Find the variance
3. Find the Standard Deviation

Question 2

How do you find the mean/median/ and average?

Answer 2

Mean - Add all the numbers in the data set and divide by the amount of numbers in the se.t
Median- List data from least to greatest, find middle number.
Average- Subtract smallest data point from the largest.

Question 3

Where does the independent variable go on a graph?

Answer 3

The x- axis

Question 4

What about the dependent variable?

Answer 4

Y-axis

Question 5

Define Mass.

Answer 5

Amount of matter in an object.

Question 6

Define volume.

Answer 6

How much space something takes up.

Question 7

List the prefixes and their base units.

Answer 7

kilo- 1,000
base- 1
centi- 1/100
milli- 1/1,000
micro- 1/1,000,000
nano- 1/1,000,000,000
pico- 1/1,000,000,000,000

Question 8

Convert 1.7 km to centimeters

Answer 8

1.7km x 10^3m/1km x 1cm/10^-2m = 170000 cm

or

1.7 x 10^5

Question 9

What’s a Direct relationship?

Answer 9

When both variables increase together.

Question 10

What’s an indirect relationship?

Answer 10

When one variable increase, the other decreases.

Question 11

What’s a peak graph?

Answer 11

When one part of the graph is the highest point and the data decreases from there.

Question 12

What’s a constant/nonlinear relationship?

Answer 12

When one variable changes and it doesn’t affect the other.

Question 13

Convert 4.5 cm into nm.