PU
Size: a a a
PU
ГД
ГД
stderr1 = sd1/sqrt(base1)
stderr2 = sd2/sqrt(base2)
stderr = sqrt(stderr1^2 + stderr2^2)
df = stderr^4/(stderr1^4/(base1 - 1) + stderr2^4/(base2 - 1))
t_statistic = (mean1 - mean2)/stderr
2 * pt(-abs(t_statistic), df)
PU
stderr1 = sd1/sqrt(base1)
stderr2 = sd2/sqrt(base2)
stderr = sqrt(stderr1^2 + stderr2^2)
df = stderr^4/(stderr1^4/(base1 - 1) + stderr2^4/(base2 - 1))
t_statistic = (mean1 - mean2)/stderr
2 * pt(-abs(t_statistic), df)
ГД
PU
А[
PU
А[
А[
А[
АК
PU
АК
ВК
ВК
А
ВК
DP
DP