Transcription of Chapter 2: Frequency Distributions - Skidmore …
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Chapter 2: Frequency Distributions - Skidmore …
Ch2 - 1 Chapter 2: Frequency Distributions It s in the context of Frequency Distributions that we encounter a telling example of the importance of communication. The nature of large data sets is difficult to communicate without some means of summarizing the data sets. We can do so graphically or statistically. This Chapter focuses on the pictorial/graphical approach. First, let s look at some data. Here are the weights (in pounds) of some people. Keep in mind, apropos the notion of real limits, that it s unlikely that anyone weighs exactly 102 pounds (to 20 decimal places). Instead, if a person weighs between and pounds, we ll call 102 pounds the weight of that person. 102 104 140 136 152 132 158 193 128 141 130 133 147 148 141 129 133 137 179 147 152 114 124 138 129 164 135 128 139 154 168 148 152 116 107 136 167 143 139 152 What can you tell me about these weights? Well, it should be obvious that no one is lighter than 100 pounds. With careful scrutiny, you may also determine that no one weighs 200 pounds or more.
Ch2 - 1 Chapter 2: Frequency Distributions It’s in the context of frequency distributions that we encounter a telling example of the importance of communication.
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