question 17
sudoku is a puzzle consisting of squares arranged in 9 rows and 9 columns. the 81 squares are further divided into nine 3 x 3 square boxes. the object is to fill in the squares with numerals 1 through 9 so that each column, row, and box contains all nine numbers. however, there is a requirement that each number appears only once in any row, column, or box. each puzzle already has numbers in some of the squares.
alisha wants to do a statistical study to determine how long it takes people to complete a sudoku puzzle. her plan is as follows. download 10 different puzzles from the internet. find 10 friends willing to participate. ask each friend to complete one of the puzzles and time him - or herself.
a) describe some of the problems with alishas plan for the study. (note: puzzles differ in difficulty, ranging from beginner to very difficult. select all that apply.)
friends having different levels of experience.
self - timing may lead to inaccurate measurements.
it is not clear that the puzzles chosen have the same difficulty.
some sudoku puzzles dont have solutions.
there are actually only 9 different sudoku puzzles.
b) are the results from alishas study anecdotal, or do they apply to the general population? the results will only apply to the circle of friends so we cannot extend them to the general population.

Question

question 17
sudoku is a puzzle consisting of squares arranged in 9 rows and 9 columns. the 81 squares are further divided into nine 3 x 3 square boxes. the object is to fill in the squares with numerals 1 through 9 so that each column, row, and box contains all nine numbers. however, there is a requirement that each number appears only once in any row, column, or box. each puzzle already has numbers in some of the squares.
alisha wants to do a statistical study to determine how long it takes people to complete a sudoku puzzle. her plan is as follows. download 10 different puzzles from the internet. find 10 friends willing to participate. ask each friend to complete one of the puzzles and time him - or herself.
 a) describe some of the problems with alishas plan for the study. (note: puzzles differ in difficulty, ranging from beginner to very difficult. select all that apply.)
friends having different levels of experience.
self - timing may lead to inaccurate measurements.
it is not clear that the puzzles chosen have the same difficulty.
some sudoku puzzles dont have solutions.
there are actually only 9 different sudoku puzzles.
 b) are the results from alishas study anecdotal, or do they apply to the general population? the results will only apply to the circle of friends so we cannot extend them to the general population.

Accepted Answer

# Brief Explanations:
a) Alisha wants to study how long it takes people to complete a Sudoku puzzle. Her plan involves gathering data from herself and 10 friends. The issues with her plan include: Self - timing may lead to inaccurate measurements as people might be distracted or rush. Also, the 10 friends may have the same level of experience with Sudoku, not representing a diverse range of abilities. And some puzzles may not have clear solutions which can affect completion times.
b) The results from Alisha's study are anecdotal because they are based on a small circle of friends and not a representative sample of the general population.

# Answer:
a) Self - timing may lead to inaccurate measurements.
Friends having different levels of experience.
It is not clear that the puzzles chosen have the same difficulty.
Some Sudoku puzzles don't have solutions.
b) The results from Alisha's study are anecdotal.

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