Statistics 1

Question 1

Advantages of a mathematical model

Answer 1

• Relatively quick and easy to produce

- They help enable predictions to be made

Question 2

Disadvantages of a mathematical model

Answer 2

• Simplification of a real world situation may cause errors

- Model may only work in certain conditions

Question 3

Process of designing a model

Answer 3

RDPCCTR

Recognise Devise Predicts Collect Compare Test Refine

Robert Downey Packages Computers Correctly To Recycle

Question 4

Types of Data

Answer 4

Qualitative (non numerical data such as colours or animals)

Quantitative (numerical data)

• Discrete Data (specific set values in a range)
• Continuous Data (Any value in a given range/measured)

Question 5

Skewness formulas

Answer 5

Q2-Q1 compared to Q3-Q2

Mode = Median = Mean (increasing is positive, decreasing negative, equal is symmetrical)

3(mean - median) divided by Standard deviation