565 493 507 566 423
503 581 424 442 457

585 582 455 597 435

591 546 554 508 535

481 572 594 498 508

Find the mean and standard deviation of these scores. Use the exact value of mean in calculations of the deviation. Round second answer to closest integer.

Question

565 493 507 566 423
503 581 424 442 457

585 582 455 597 435

591 546 554 508 535

481 572 594 498 508

Find the mean and standard deviation of these scores. Use the exact value of mean in calculations of the deviation. Round second answer to closest integer.

amistre64 · Answer

you really should have a statisitcs calculator or program; makes life easier for these

amistre64 · Answer

knowing how to do it by hand is one thing; but once you know the process, calculator makes it alot faster

anonymous · Answer

the mean is 520.08

anonymous · Answer

now i just need the standard deviation

anonymous · Answer

This problem would take 10 minutes to type in.  A graphing calculator has functions that solve this stuff in a minute.

amistre64 · Answer

sample sd = 58.0035

population sd = 56.8316

amistre64 · Answer

i assume since it doesnt say "sample" in it id go with population

anonymous · Answer

ya, Sx= 58.0035

anonymous · Answer

http://www.wolframalpha.com/input/?i=SD+ [565%2C+493%2C+507%2C+566%2C+423%2C+503%2C+581%2C+424%2C+442%2C+457%2C+585%2C+582%2C+455%2C+597%2C+435%2C+591%2C+546%2C+554%2C+508%2C+535%2C+481%2C+572%2C+594%2C+498%2C+508]&a=*C.SD-_*PopulationStandardDeviation-