Unit 1.2

Question 1

What is the prefix for a unit measuring a thousandth of its base unit?

Answer 1

milli-

Question 2

The prefix kilo- is ___ times its base unit.

Answer 2

1,000 times

Question 3

What is the purpose of standard deviation?

Answer 3

to help find outliers

Question 4

In standard deviation, the larger the result the ___ the values are.

Answer 4

more spread out

Question 5

What is the equation for standard deviation?

Answer 5

sqrt ( ( each value - mean of values ) ^2 / (number of values) )

Question 6

While graphing, which variable goes on which axis?

Answer 6

independent - x
dependent - y

Question 7

T / F : You should connect the dots on your graphs every time.

Answer 7

False - only connect the dots of your graph if told so

Question 8

Which type of graph has one variable increasing, while the other decreases?

Answer 8

Indirect

Question 9

How should a graph be set up?

Answer 9

The scale should fit each variable and use most of available space.
The title of the graph should be at the top

Question 10

T / F : Different colors should be used when plotting multiple sets of data on the same graph.

Answer 10

True - the colors differentiate the different sets of data, making the graph easier to read.

Question 11

What is the difference between mass and volume?

Answer 11

Mass measures the amount of matter something contains, while volume measures how much space in takes up.

Question 12

What does a scale, graduated cylinder, and thermometer measure? What units do they each measure with?

Answer 12

Scale - mass (grams)
Graduated Cylinder - volume (milliliters)
Thermometer - temperature (degrees celcius)

Question 13

How do you calculate mean?

Answer 13

Add up all data points and divide by the number of data points.

Question 14

How do you calculate median?

Answer 14

Order data points in order from smallest to largest and find the center point. If there is no specific center point, average the two closest.