Maths skills

Question 1

How do you calculate surface area to volume ratio?

Answer 1

surface area/volume

Question 2

How to calculate surface area?

Answer 2

Area of shape X number of faces

Question 3

How to calculate volume?

Answer 3

Length X Height X Width

Question 4

Surface area of a sphere?

Answer 4

4πr2

Question 5

Volume of a sphere?

Answer 5

4

3πr3

Question 6

How to convert 1m to mm?

Answer 6

X1000

Question 7

How to convert 1m to μm?

Answer 7

1m X1000 = 1000mm X1000 = 1000000μm

Question 8

m to cm? cm to m?

Answer 8

X100 X100

Question 9

What is the factor of a μm?

Answer 9

10 to the power of -9 10^(-9)

Question 10

What is the factor of mm?

Answer 10

10 to the power of -3

Question 11

What is the factor of km?

Answer 11

10 t the power of 3

Question 12

m2

Answer 12

1000 X 1000 so conversion factor becomes 1000000

Question 13

m3

Answer 13

1000 X 1000 so the conversion factor becomes 1000000000

Question 14

How to calculate median;

Answer 14

Put the numbers in order from smallest to largest and count which one is in the middle.

Question 15

Percentage change:

Answer 15

mass change/starting mass X 100

Question 16

when the independent variable is continuous data, you should use a …?

Answer 16

Line graph

Question 17

When your independent variable has discrete date, you should use a …?

Answer 17

Bar chart

Question 18

When your categoric data is in groups that can be arranged on a continuous scale, you should use …?

Answer 18

A histogram

Question 19

When is a student t test used?

Answer 19

To judge the significance of any difference between the means of sets of data that are collected from 2 groups.