Ask your own question, for FREE!
Mathematics 14 Online
OpenStudy (anonymous):

a class has 3 sections SECTION ONE has (22 students), (avg score = 68), (SD = 9) SECTION TWO has (25 students), (avg score = 75), (SD = 9) SECTION three has (32 students), (avg score = 60), (SD = 9) WHAT IS THE Standard deviation OF CLASS ?

OpenStudy (lyrae):

avg = (22*68 + 25*75 + 32*60) / (22 + 25 + 32) not sure about the std

OpenStudy (anonymous):

Thx a lot

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
VERNEISH: Two objects are moving along separate linear paths where each path is described by position, d, and time, t.
15 hours ago 0 Replies 0 Medals
Arriyanalol: i need help
1 day ago 7 Replies 1 Medal
Arriyanalol: CONGRATS to me
1 day ago 8 Replies 2 Medals
Maci: what are the best stock apps for people who want to start investing?
4 days ago 3 Replies 2 Medals
Twaylor: genuienly how do i get better self control i keep watcing youtube and theres this
1 week ago 3 Replies 0 Medals
IzzyCookie: |dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
2 days ago 9 Replies 1 Medal
Legomaster346: What colleges are good that are near Arab Alabama?
1 week ago 5 Replies 0 Medals
Maci: what is your thoughts on qc reaching 10years lmk who the ogs
1 week ago 9 Replies 1 Medal
thehearken: not sure if this is considered spam, im sorry if it is, but does anyone have tips
1 week ago 2 Replies 1 Medal
Arriyanalol: i need help
1 week ago 6 Replies 2 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!