some vocab statistics is the art of solving problems and answering questions by collecting and...
TRANSCRIPT
![Page 1: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/1.jpg)
STATISTICSF
![Page 2: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/2.jpg)
![Page 3: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/3.jpg)
Some vocab
Statistics is the art of solving problems and answering questions by collecting and analysing data.
Data are the facts or information we collect and analyze. (plural)
(note datum is the singular term) Data set- a list of unorganized data. Often called the
raw data
![Page 4: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/4.jpg)
More vocab
Population- a collection of individuals about which we want to draw info/ conclusions
Sample- a subset of the population. (important for a sample to be random and to avoid bias!)
Survey- a collection of info from a sample Parameter- a numerical quantity measuring some aspect
of a population (i.e. mean (average) and usually have greek letters like αβγδμσρ etc)
Distribution- the “spread” of the data Outliers- much larger or smaller than general body of
data.
![Page 5: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/5.jpg)
Raw Data
.....just the numbers
![Page 6: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/6.jpg)
Statistical Investigation
Step 1: Examining a problem which might be solved using data and asking questions (how many students ride bikes to school)
Step 2: Collecting the data Step 3: Organising the data. Step 4: Summarising and displaying the data. Step 5: Analysing the data, and making a conclusion Step 6: Writing a report (presenting your findings)
![Page 7: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/7.jpg)
Census/Sample
A census is a method which involves collecting data about EVERY individual in a whole population.
A sample is a method which involves collecting data about a part of the population. Not as detailed or accurate as census,
but easier.
![Page 8: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/8.jpg)
Problems with a sample
A sample can be biased if the data has been unfairly influedned in the collection process. A biased sample won’t represent the whole population
Question: Are you good at climbing trees?
![Page 9: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/9.jpg)
Other problems
Question: Do Americans like cheese burgers???
I am American. I like cheese burgers. There fore ALL Americans like cheeseburgers. Valid argument?!?! …..i think NOT! A sample must be sufficiently large to
represent the whole population
![Page 10: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/10.jpg)
Variables in Statistics
Categorical variable – describes qualities or characteristics. Can be divided into categories.
The information is called categorical data.
Examples. Getting to school: Bus, train, bike, car, walking. Color of eyes:
![Page 11: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/11.jpg)
Variables in statistics
Quantitative variable- has a numerical value, and is often called a numerical variable.
The information collected is called numerical data. Can be discrete or continuous. A quantitative discrete variable takes exact number
values. (Think counting) Examples. Number of people in a house hold The score out of 30 on a test The number of sunny days in Stavanger. 1,2,3,4,.....
![Page 12: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/12.jpg)
Variables in Statistics
A quantitative continuous variable takes numerical values within a certian CONTINOUS range. (think measuring)
Examples. The weights of new born babies The heights of 9th grade students Time
![Page 13: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/13.jpg)
Bar Chart vs. Histogram
Histogram
DISCRETE DATAContinuous Data
![Page 14: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/14.jpg)
Bar Chart and Histogram
Both have: Frequency on vertical axis and scores
on horizontal Column widths are EQUAL Modal class = highest bar
![Page 15: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/15.jpg)
Presenting the Data
See text page 378/9
![Page 16: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/16.jpg)
Presenting and Interpreting Data
![Page 17: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/17.jpg)
Presenting and Interpreting Data
![Page 18: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/18.jpg)
![Page 19: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/19.jpg)
![Page 20: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/20.jpg)
![Page 21: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/21.jpg)
The Distribution of Data
(going to lunch)
![Page 22: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/22.jpg)
![Page 23: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/23.jpg)
![Page 24: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/24.jpg)
The “spread” of the Data
![Page 25: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/25.jpg)
Outliers
![Page 26: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/26.jpg)
![Page 27: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/27.jpg)
![Page 28: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/28.jpg)
![Page 29: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/29.jpg)
Interesting Statistics
http://www.worldometers.info/ http://www.informationisbeautiful.net
/visualizations/ http://www.babynamewizard.com/vo
yager#ms=false&exact=false http://news.bbc.co.uk/2/hi/science/na
ture/7137462.stm
![Page 30: Some vocab Statistics is the art of solving problems and answering questions by collecting and analysing data. Data are the facts or information](https://reader035.vdocuments.mx/reader035/viewer/2022062620/551b0b42550346f70d8b5bf5/html5/thumbnails/30.jpg)
See “big” data pdf