Data task 74: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 36 and 38, with means 63 and 67. What is the combined mean?

Data task 74: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 36 and 38, with means 63 and 67. What is the combined mean?

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