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fredd [130]
3 years ago
6

What is the first quartile (Q1) of the data set? 51, 42, 46, 53, 66, 70, 90, 70

Mathematics
1 answer:
Ann [662]3 years ago
6 0
Values in increasing order 
<span>42 </span>
<span>46 </span>
<span>51 </span>
<span>53 </span>
<span>66 </span>
<span>70 </span>
<span>70 </span>
<span>90 </span>


<span>Lower quartile : There are 8 observations </span>
<span>If there are in observations, compute the lower quartile as follows: </span>
<span>if n/4 is an integer, compute the lower quartile as </span>
<span>(x[n/4]+x[n/4+1])/2 :: (x[8/ 4]+x[8 /4 +1])/2 </span>
<span>if n/4 is not an integer, compute the lower quartile as </span>
<span>x[k], where k is the smallest integer exceeding n/4:: 2 = 2 </span>
<span>Lower Quartile : Average of observations 2 and 3 is -- </span>
<span>= (46+51)/2 = 48</span>
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