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77julia77 [94]
3 years ago
12

Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrange for the data and then​ (e) answer the given question. Listed below

are the weights in pounds of 11 players randomly selected from the roster of a championship sports team. Are the results likely to be representative of all players in that​ sport's league? 278 279 185 299 245 281 291 234 278 227 281
Mathematics
1 answer:
quester [9]3 years ago
4 0

Answer:

  • Mean = 261.63 pounds
  • Median = 278 pounds
  • Modes: 278 & 281
  • Mid-range = 242
  • Yes all the results will be able to represent all players in the sports league

Step-by-step explanation:

First of all, we will sort the data.

185 227 234 245 278 278 279 281 281 291 299

<u>Mean:</u>

Mean is defined as the sum of values divided by the number of values.

n = 11

Mean = \frac{sum}{n}\\= \frac{185+227 +234+ 245+ 278+ 278+ 279+ 281+ 281+ 291+ 299}{11}\\=\frac{2878}{11}\\=261.63\ pounds

<u>Median:</u>

As the number of values is odd,

The median will be:

Median = (\frac{n+1}{2})th\ value\\= \frac{11+1}{2}\\=\frac{12}{2}\\=6th\ value

The 6th value is 278

Median = 278

<u>Mode:</u>

Mode is the most frequent value in a data set.

In the given dataset,

278 and 281 are modes as both are repeated twice

<u>Mid-range:</u>

Mid-range is the average of maximum and minimum value

So,

Min = 185

Max = 299

So,

Mid-range = \frac{Max+Min}{2}\\= \frac{185+299}{2}\\= \frac{484}{2}\\= 242

Hence,

  • Mean = 261.63 pounds
  • Median = 278 pounds
  • Modes: 278 & 281
  • Mid-range = 242
  • Yes all the results will be able to represent all players in the sports league
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