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Wellness Data – Cholesterol levels. Your worksite has instituted a new wellness program. As part of...

  1. Wellness Data – Cholesterol levels.

Your worksite has instituted a new wellness program. As part of the plan for future evaluation of the effectiveness of the program, data are collected on a variety of health measures. These data are being collected every three months for the next two years. One of the measures collected by researchers was employee's cholesterol level. Initial data for 60 employees is listed below.

205

327

189

205

148

139

178

157

188

301

195

185

164

182

201

248

298

264

177

169

174

169

155

188

194

192

177

189

188

176

158

305

248

189

209

159

202

177

278

268

166

285

249

203

199

170

165

180

201

209

301

188

165

173

183

206

202

283

207

156

1. Find the highest and the lowest scores and place your data into an array, arranging values from highest to lowest

2. Evaluate your data. Do you see any clusters of scores, and are there any gaps in the data

3. What intervals should be used and why. Remember that your intervals must be equal and non-overlapping. Your intervals do NOT need to begin or end with your highest/lowest values.

4. Construct a frequency table for these data including intervals, frequency, relative frequency, and cumulative relative frequency and then create histograms and frequency polygons for these data.

math   Statistics-And-Probability   
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Answer #1

Highest score =327

Lowest score =139

Range =188

Since sample size is 60,by rule of thumb we take 10 classes and the width is 188/10 approx.equal to 20

So we take class intervals from 130-149,150-169,...,310-329

The descending order array and the corresponding frequency table with relative and cumulative frequency are given below

dws/contrb/3.1 Pepository https://cran.rstudio.com/bin/indows/comtrib/3.1 warning: unable to access index for repository httpby examining the frequency table , the clusters between 150 to 210 has more points in it

Histogram

Plos Parkages Fles Help iewer 2oom Export-O Publich Histogram of x 177 189 188 206 202 283 194 192 189 157 156 155 300 250 20The frequency polygon is obtained by joining the mid points of each bar in the histogram by line.

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