Data task 4: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 22 and 31, with means 56 and 66. What is the combined mean?

Data task 4: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Two groups have sizes 22 and 31, with means 56 and 66. What is the combined mean?

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