243

290

199

240

125

151

158

66

350

1041

251

385

239

139

181

111

136

250

313

154

78

264

123

314

135

99

420

112

239

208

65

133

213

229

154

377

69

170

261

230

273

288

180

296

235

243

167

227

384

331

2. Call centers today play an important role in managing day to day business communications with customers. It's important, therefore, to monitor a comprehensive set of metrics, which can help businesses understand the overall performance of a call center. One key metric for measuring overall call center performance is the amount of time spent speaking to customers on the phone. The file Q2_Data contains the following data for time, in seconds, spent by agent talking to 50 customers. a) Compute the five-number summary. (1 mark) b) What is the appropriate numerical summary to describe the center of the distribution? Explain briey. (1 mark) c) Calculate and interpret the IQR. (1 mark) d) What is the appropriate graphical summary to describe these data? Explain briey. (1 mark) e) Identify the outlier/ s using appropriate graphical summary. You must attach copy of your graph. (1 mark) f) Describe the shape of the distribution. (1 mark)