Question

In: Statistics and Probability

Praxis Scores 115 124 132 134 136 137 138 138 139 140 141 141 144 144...

Praxis Scores

115 124 132 134 136 137 138 138 139 140

141 141 144 144 145 145 145 146 146 148

150 150 150 151 151 151 151 154 154 156

156 156 156 157 158 159 159 159 159 160

161 161 161 161 162 162 163 164 164 164

164 165 165 165 166 166 166 166 168 168

168 168 168 168 169 169 169 169 170 170

171 171 172 173 173 173 173 173 174 174

174 174 175 175 175 175 175 175 175 176

176 177 177 177 177 177 178 179 179 179

179 180 180 180 180 180 180 180 181 181

182 182 182 182 183 183 183 184 184 185

185 185 186 186 187 187 187 188 188 188

189 190 190 191 191 191 191 191 192 192

192 193 194 194 194 196 196 197 198 199

Column

n

Mean

Std. Dev.

Q1

Q3

Praxis

150

169.7

17.1

159

182

  1. Find and interpret the Z-score

Solutions

Expert Solution

Z score can be calculated using formula:

Positive Z-score value represents that the values are greater than the mean and negative values represent that the values are less than mean.

or

if Z=3, means the value is 3 standard deviation above the mean.


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