求教~GRE OG P296 中的 interquartile range 为啥带公式算的不对呢 17 OG P2962.The numbers of passengerson 9 airline flights were 22,33,21,28,22,31,44,) 50,and 19.The standarddeviation of these 9 numbers is approximately.equal to 10.2

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求教~GRE OG P296 中的 interquartile range 为啥带公式算的不对呢 17 OG P2962.The numbers of passengerson 9 airline flights were 22,33,21,28,22,31,44,) 50,and 19.The standarddeviation of these 9 numbers is approximately.equal to 10.2
求教~GRE OG P296 中的 interquartile range 为啥带公式算的不对呢 17
OG P296
2.The numbers of passengerson 9 airline flights were 22,33,21,28,22,31,44,) 50,and 19.The standarddeviation of these 9 numbers is approximately.
equal to 10.2
(a)find the mean,median,mode,range,and interquartile range of the 9 numbers.

求教~GRE OG P296 中的 interquartile range 为啥带公式算的不对呢 17 OG P2962.The numbers of passengerson 9 airline flights were 22,33,21,28,22,31,44,) 50,and 19.The standarddeviation of these 9 numbers is approximately.equal to 10.2
这九个数从小到大排列为:19 21 22 22 28 31 33 44 50
问题就是让我们去求这九个数的平均数、中数、众数、离差和四分位距~
平均数你肯定会吧,
中数就是从小到大排序,第五个位置的数就是中数,应该是28吧~
离差就是用最大数减去最小数,50-19=31,
四分位距:先求这9个数的第一个四分位数Q1和第三个四分位数Q3,然后四分位距=Q3-Q1.
我们已知:19 ;21 22; 22 ; 28 ; 31 ;33 44 ; 50
所以,Q1=(21+22)/2=21.5 Q2=28 Q3=(33+44)=38.5 所以四分位距=38.5-21.5=17