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5. (a) Write down two reasons for using statistical models - Edexcel - A-Level Maths Statistics - Question 5 - 2006 - Paper 1
Question 5
5. (a) Write down two reasons for using statistical models. (b) Give an example of a random variable that could be modelled by i) a normal distribution, ii) a dis... show full transcript
Worked Solution & Example Answer:5. (a) Write down two reasons for using statistical models - Edexcel - A-Level Maths Statistics - Question 5 - 2006 - Paper 1
Step 1
Write down two reasons for using statistical models.
Answer
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Statistical models help to simplify real-world problems, making complex situations easier to understand and analyze.
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They can improve our understanding of data by allowing us to describe and analyze various aspects of real-world phenomena effectively.
Step 2
Give an example of a random variable that could be modelled by a normal distribution.
Answer
An example of a random variable that could be modeled by a normal distribution is height. Heights in a population tend to follow a bell-shaped curve, with most individuals clustered around the average height.
Step 3
Give an example of a random variable that could be modelled by a discrete uniform distribution.
Answer
An example of a random variable that could be modeled by a discrete uniform distribution is the score on a face after tossing a fair die. Each face (1 through 6) has an equal probability of landing face up.