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Среднее значение. Дисперсия. Стандартное отклонение. Урок 4
По таблице распределения частот найди целое значение a, если среднее значение выборки
Х= 4,7.
Варианта, xi
1
a
6
7
Частота, mi
1
a
5
1
Ответ: a =
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