S8 - Statistics

Which of the following is anecdotal evidence?

• The ingredients on a bottle of juice

• The experiences of a friend

• A scientific study

• Manufacturer instructions

Systematic collections of data helps to minimize:

• Anecdotes

• Bias

• Effect size

• Statistical significance

True or false: it is practical to measure true population values

• True

• False

Random sampling describes

• The random selection of samples

• Sampling on a random day of the year

• Sampling random things rather than focusing on one type

• Measuring different things each time

Which of the following would be the most random way of generating a number?

• Thinking of numbers between one and one hundred

• Using the motions of a lava lamp

• Selecting the largest things to sample

• Asking a friend to do something random

Why can we not have samples of unlimited size?

• It would take too much time

• It would be too expensive

• It would be difficult to do

• All of the answers are correct

Another word for the mean is:

• Average

• Rude

• Median

• Mode

What does the median describe?

• The average

• The most frequent number

• The middle number

• The spread of the numbers

What does the mode describe?

• The average

• The middle number

• The most common number

• The spread of the numbers

What does standard deviation describe?

• The average

• The middle number

• The most common number

• The spread of the numbers