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Help! This one step for solving standard deviation I don't understand... When I got it wrong it tells me what to do but I don't get it? (2nd image)

Help! This one step for solving standard deviation I don't understand... When I got it wrong it tells me what to do but I don't get it? (2nd image)
asked 38.3k views
18 votes
Help! This one step for solving standard deviation I don't understand...

When I got it wrong it tells me what to do but I don't get it? (2nd image)

Help! This one step for solving standard deviation I don't understand... When I got-example-1
Help! This one step for solving standard deviation I don't understand... When I got-example-1
Help! This one step for solving standard deviation I don't understand... When I got-example-2
asked
User Avnish
by
7.9k points

1 Answer

10 votes

x = 10

hope it helps...!!!

Help! This one step for solving standard deviation I don't understand... When I got-example-1
answered
User Evgeny Kharitonov
by
8.0k points
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