CML1.docx - ECON1310 CML1 Descriptive Statistics Q1 Media...

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ECON1310 CML1 Descriptive Statistics Q1. Media reports suggest that shareholders are becoming more willing to put pressure on the performance of corporate managers. Is shareholder activism really increasing or is the media just creating a story? To answer this question, a research organisation questioned 240 shareholders. One question asked was "Have you contacted a corporate director in the last year to express your views on manager performance?" 40% responded yes. A. Identify the population of interest. B. Based on the question asked, what is the variable of interest? C. Identify the sample. Q. A sample of ten steel rods had the following lengths: 214 202 222 205 211 204 184 218 195 218 Calculate the variance in rod length using this sample data (one decimal place). Q. A sample of ten people from an outer Sydney suburb travelled the following distances each day: 14.7 16.5 38.3 22.0 30.5 50.5 23.8 25.9 41.0 29.4 Find the difference between the median and the mean of the sample (correct to 2 decimal places)?
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