1a
2 marks
Morgan is investigating the 180 Year 11 students in his school.
He collected information from the 30 students in his class.
Part of the spreadsheet he used to collect the information is shown below.
Student number | Name | Left-handed (1 = yes, 0 = no) | Height (cm) |
|---|---|---|---|
1 | Jason | 0 | 169 |
2 | Rami | 1 | 165 |
… | … | … | … |
29 | Youen | 0 | 164 |
30 | Elena | 0 | 162 |
Total | 4 | 5031 |
Morgan uses these results to find estimates for all Year 11 students.
Find his estimate for the number of left-handed students in Year 11.
1b
1 mark
Explain how Morgan can use the information in the spreadsheet to estimate the mean height of all the students in Year 11
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