STATISTICS AND PROBABILITY- quarter

Front

The number of avocados produced by an avocado tree each year is a continuous variable.

Back

False - The number of avocados is a discrete variable because it can only take on whole number values.

Front

Which of the following is NOT a continuous variable? A person’s height each year, A person’s weight on each birthday, Number of Cars finished in a factory each day, The volume of water in a swimming pool.

Back

Number of Cars finished in a factory each day - This is a discrete variable.

Front

What part of a normal curve is extended indefinitely both directions along the horizontal axis, approaching but never touching it?

Back

Tail - The tails of the normal distribution extend indefinitely.

Front

If two balls are drawn in succession without replacement from an urn containing 5 red balls and 6 blue balls, how many outcomes are possible if the random variable represents the number of blue balls?

Back

4 - The possible outcomes are 0, 1, or 2 blue balls.

Front

Identify the random sampling method: You wish to make a comparison about the gender differences in Mathematics performance. You divide the population into two groups, male and female, and randomly pick respondents from each gender.

Back

Stratified random sampling - This method involves dividing the population into subgroups and sampling from each.

Front

Define a continuous variable.

Back

A continuous variable is a variable that can take on an infinite number of values within a given range.

Front

Define a discrete variable.

Back

A discrete variable is a variable that can take on a finite number of values, often counted in whole numbers.

Front

What is a normal distribution?

Back

A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.

Front

What does the term 'random sampling' mean?

Back

Random sampling is a technique where each member of a population has an equal chance of being selected.

Front

What is the purpose of stratified random sampling?

Back

Stratified random sampling aims to ensure that specific subgroups within a population are adequately represented.