The resident psychologist for the Mean Corporation wishes to study the Intelligent Quotients {IQs} of its staff. As an initial stepr she randomly selects seven employees to participate in an IQ test. Their results are presented in the following table. Emp loyee 1Q a) Calculate the inter-quartile range {[QR). Give your answer to 1 decimal place. 1w- b) Calculate the sample variance. Give your answer to 1 decimal place. Sample variance = |:| In a nance study, 20 companies were chosen from the market and their share prices were recorded. The following year. the new prices of those shares were recorded. The following table of data presents the new share prices as a percentage of1e old share prices for each of the 20 companies. You believe that the outlying value of 5 should be removed. Describe the effect this would have on the following measures of centrality and variation. a) The mean _ m The _ c) The standard deviation . J. Mean Cor oration Data (We)