Presentation on theme: "Unit 1 General Maths Hi, I’m Ms Mongan"— Presentation transcript:
Unit 1 General Maths Hi, I’m Ms Mongan
Questionnaire Instructions: Please answer the following questions in your book, on your own and without speaking. I will explain why at the end I will explain why at the end
Preliminary Question Write down the time you begin this questionnaire. Eg. 1:36pm
Question 1 1. Starting with yourself, what are the names of the people sitting in your row (or at your table)?
Question 2 2. State your approximate height in metres.
Question 3 3. How many years old do you think your teacher is?
Question 4 4. Please rate your dislike of mathematics A) Very weak B) Weak C) Moderate D) Strong E) Very strong
Question 5 5. Which town do you live in?
Question 6 6. Are you a morning person or a night person?
Question 7 7. Would you rate yourself as: A) Above average intelligence B) Average intelligence C) Below average intelligence?
Question 8 8. How many siblings do you have?
Question 9 9. How long did it take you to complete this survey?
Types of Data collected 1. Names = Categorical, nominal 2. Height = Numerical, continuous 3. Age = Numerical, discrete 4. Dislike = Categorical, ordinal 5. Town = Categorical, nominal 6. Morning/Night= Categorical, nominal 7. Intelligence = Categorical, ordinal 8. Siblings = Numerical, discrete 9. Time = Numerical, continuous
Exercise 1A Categorical Data – Nominal or Ordinal? p5
Exercise 1A Numerical Data – Discrete or Continuous? p5
Frequency Distribution Table OK, we’ve collected the data. How do we best represent it?
Frequency Frequency: The number of times something occurs eg. A particular piece of data
This is a frequency distribution table The question asks us to put the info into a bar chart…. ??????? Picture it in your mind then draw a rough one. What kind of data is this?
Exercise 1A - Representing Categorical Data p6
Grouping Data Let’s say you collect a whole heap of scores (n________ data) It is sometimes convenient to put it into groups. Can this be done with categorical data?
What do groups look like? Groups (also known as classes) are chosen by you! It is just a range of numbers Try and form between 5 and 10 classes for your data Eg. What percentage signifies an A+ at WSC? What about a C? UG?
Spot the differences! I mean, compare and contrast…
My favourite word for today: Polygon Another awesome word: Distribution
Normal Distribution- most common score in the centre. Symmetrical. Skewed Distribution – look at where it has been dragged Bimodal distribution – Bi = two mode = score than occurs the most
Summary Types of Data Representing Data
Types of Data Categorical Nominal Ordinal Numerical Discrete Continuous
How do you represent Categorical Data? Bar chart Eg.
How do you represent Numerical Data? (Grouped and ungrouped) Histogram and Polygon Eg.