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Percentile rank

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On a paper and pencil measure of self-esteem, subjects in an experiment received the following scores:

113 131 138 145 154 116 131 138 145 155

119 132 138 146 156 119 133 140 146 157

121 134 140 148 163 125 134 141 150 167

129 134 141 151 129 135 142 152 130 137

143 141

What is the percentile rank of score 152 for this distribution, and how is this calculated as well as the 60th and 30th percentile point of this same distribution. Can you show me the calculations for each as this is confusing.

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The percentile rank is calculated.

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