Data task 44: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 30 and 35, with means 60 and 70. What is the combined mean?

Data task 44: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 30 and 35, with means 60 and 70. What is the combined mean?

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