Data task 104: A pre-service teacher is using the data for classroom planning, assessment or school operations. The setting is an excursion planning task. Find the arithmetic mean of 12, 19, 26, 33, 40.

Data task 104: A pre-service teacher is using the data for classroom planning, assessment or school operations. The setting is an excursion planning task. Find the arithmetic mean of 12, 19, 26, 33, 40.

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