Mean, Median and Mode

How to calculate Mean, Median and Mode

Mean

Add up all of the numbers then divide the total number amount of how many numbers there are

Median

Order all the numbers in numerical order then find the middle number in the list and thats the median. If there are two numbers in the middle add both the numbers together the divide by two.

Mode

To find the mode order the numbers then count how many of the same number there is. the number with that is the most often is the mode.

Who invented Mean, Median and Mode

Mean

The term is first found in the mid-1690s in the writings of Edmund Halley, and it has been used to summarize observations of a variable since the time of Galileo.

Median

An early use in English of the statistical concept of median was Francis Galtons observation that “the median … is the value which is exceeded by one-half of an infinitely large group, and which the other half falls short of”

Mode

An early use of the statistical concept of the mode was by English mathematician Karl Pearson in 1895 when he stated that “I have found it convenient to use the term mode for the abscissa corresponding to the ordinate of maximum frequency”

Give an example of a practical use use- where you would find it useful

For mean you can use it to fint the average of something for exaple sports often show player stats  with averages. They would add up all the blocks he made every game then divide it of how many games and that would give him an average.

For median 

Websites:

https://www.encyclopedia.com/

How to work out volume

What do you mean by volume:

The amount of space the object occupies

How do you convert volume to litres 

For cubic centimetres  1,000.00

How do we measure it

m³

cm³

mm³

Volume of a rectangle 

hxbxl

Volume of a cylinder 

πxr²xh

Volume of a prism

1/3xπxr²xh

b=3m h=1.2m l=8m
bxhxl

3m x 1.2m x 8m

=28.8m³

28.8x1000

=28800L

one litre weighs one kilo so there for

the pool weighs 28800 kilos

Dia of 0.75m h = 1.5m

πxdxh

π x 0.75 x 1.5

=3.5m³

3.5 x 1000

3500

Critical literacy

8/3/21

Title: Minecraft Construction handbook

Instruction text

Author: Egmont

An official guide to Minecraft construction shares essential tips and tricks for building creative structures and innovations ranging from theme parks and waterslides to pirate coves and animal cannons. 

15/3/21

Title: Minecraft Red stone handbook

Instruction text

Publisher: egmont

Redstone experts guide you through all aspects of working with Redstone including mining, smelting, using repeaters, circuit components and circuit designs. This handbook also includes exclusive tips from game creator Notch himself and some of the most extraordinary Redstone creations ever made.

Reflection

Title: Diary of a wimpy kid

Genre: Book 

Author: Jeff Kinney

A family road trip is supposed to be a lot of fun . . . unless, of course, you're the Heffleys. The journey starts off full of promise, then quickly takes several wrong turns. Gas station bathrooms, crazed seagulls, a fender bender, and a runaway pig—not exactly Greg Heffley's idea of a good time. Rowely was gregs bestfreind

Converting Chart

 

When we dived by 10 we move the DP i place to left

When we dived by 100 we move DP 2 places to the left 

When we multiply by 10 we move the DP 1 place to the right

When we multiply by 100 we move the DP 2 places to the right

mm	cm	m	km
12000mm	1200cm	12m	0.012km
5000mm	500cm	5m	0.005km
120000mm	12000cm	1200m	1.2km
326mm	32.6cm	0.326m	0.00326km
1200mm	120cm	1.2m	0.012km

Basic tools in wood work

Carpenters pencil 

Identify:

Describe: The carpenters pencil is like and ordinary pencil but flat

Explain: The pencil is to mark out on your work. and the reason it is flat is so that it doesn't roll away 

Marking Gauge

Identify:

 

Describe: It has a long piece of wood and another that's a box type of shape that has a thumbscrew in it. there's a nail on the top-side of the long piece of wood

Explain: this is used to mark out a line on piece of wood by puting in it on a ruler you can accurately mark it

Combination Set Square 

Identify:

Describe: Its a ruler with a handle with a bubble level

Explain: Here's a video link

Sliding bevel

Identify:

Describe: It has a metal slide that turns around on a piece of wood

Explain: Here's a video that explains it Link

Woodwork set square

Identify: 

Describe: There is a metal flat sheet connected to a wood handle

Explain: It is used for marking out right angles before any joint is cut. It can also be used for marking straight lines and checking straight edges. 

Link

Trees and NZ timber

 

Crown is the top half of the tree 

Leaves are what the tree produce 

Branches stem off to create leaves

The trunk is like the body of the tree

Roots are for holding the tree down for wind and also to transfer chemicals and water to the tree

Cross section of a tree trunk and stump: trunk: part of the tree, between the roots and the branches, consisting of wood on the interior and bark on the exterior. Stump: the remainder of the trunk including the roots after the tree is felled.

Most trees are meant to be cut down to lumber Is grown in managed forests owned by the company or leased to them by the government. When the trees grow into their ideal size they cut them down to send to the lumber mill where they get cut in many shapes and sizes.

The tree gets cut down then skim all the branches off the tree next is to cut it into size so that they can tranzport it to the lumber mill and from there they remove the bark off the tree and cut it into size. They also dry the limber.