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Mathematics, 08.05.2021 16:00 smortandsons

Els creadors d'una app demanen als seus 25 000 usuaris que valorin la seva experiència amb l'app, amb una nota de l'1 al 5, on 1 és la pitjor nota i 5, la millor. Només 4 500 usuaris responen a la pregunta. Determina: a) Quina és la variable estudiada? b) De quin tipus de variable es tracta? c) Quina és la població estudiada? d) Quina és la mostra estudiada?

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