Random Number Tables - statistics (used to be S3, now Year 1)
I had this question come up.
Using the random number tables in the formulae book, and starting with the top hand corner (8) and working across, 50 random numbers between 1 and 550 inclusive were selected. The first two suitable numbers are 384 and 100
and used this thread to help out.
https://www.thestudentroom.co.uk/showthread.php?t=2606555
My question is, is it always that we look using 3 digits? Or is there ever a time where we use 2 digits etc? Because I don't understand why "8" or even "86" wouldn't be considered as they are within the parameters of 1 and 550.
And if it is only ever 3 digits that are used, why not write using three digits only? As then every question is surely going to use the same "random number"s?
As an extra: Does anybody have any worksheets/questions where I can have my students (and myself, as it seems!)
Using the random number tables in the formulae book, and starting with the top hand corner (8) and working across, 50 random numbers between 1 and 550 inclusive were selected. The first two suitable numbers are 384 and 100
and used this thread to help out.
https://www.thestudentroom.co.uk/showthread.php?t=2606555
My question is, is it always that we look using 3 digits? Or is there ever a time where we use 2 digits etc? Because I don't understand why "8" or even "86" wouldn't be considered as they are within the parameters of 1 and 550.
And if it is only ever 3 digits that are used, why not write using three digits only? As then every question is surely going to use the same "random number"s?
As an extra: Does anybody have any worksheets/questions where I can have my students (and myself, as it seems!)
Reply 1
Original post
by misslgreenI had this question come up.
Using the random number tables in the formulae book, and starting with the top hand corner (8) and working across, 50 random numbers between 1 and 550 inclusive were selected. The first two suitable numbers are 384 and 100
and used this thread to help out.
https://www.thestudentroom.co.uk/showthread.php?t=2606555
My question is, is it always that we look using 3 digits? Or is there ever a time where we use 2 digits etc? Because I don't understand why "8" or even "86" wouldn't be considered as they are within the parameters of 1 and 550.
And if it is only ever 3 digits that are used, why not write using three digits only? As then every question is surely going to use the same "random number"s?
As an extra: Does anybody have any worksheets/questions where I can have my students (and myself, as it seems!)
Using the random number tables in the formulae book, and starting with the top hand corner (8) and working across, 50 random numbers between 1 and 550 inclusive were selected. The first two suitable numbers are 384 and 100
and used this thread to help out.
https://www.thestudentroom.co.uk/showthread.php?t=2606555
My question is, is it always that we look using 3 digits? Or is there ever a time where we use 2 digits etc? Because I don't understand why "8" or even "86" wouldn't be considered as they are within the parameters of 1 and 550.
And if it is only ever 3 digits that are used, why not write using three digits only? As then every question is surely going to use the same "random number"s?
As an extra: Does anybody have any worksheets/questions where I can have my students (and myself, as it seems!)
Think of a random number table as a big list of numbers jumbled up.
Since you need numbers between 1 and 550, you should always look at three digits at a time (like 001, 002, …, 550).
If you pick just one or two digits, you might get a number that’s too small, and that wouldn’t be fair.
We don’t always use three digits—it depends on the biggest number we need:
•
If the range is 1 to 9, we use 1 digit.
•
If the range is 1 to 99, we use 2 digits.
•
If the range is 1 to 550, we use 3 digits.
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