For ungrouped data 10,15,25,15,20, x median and mode are equal and also mean for data
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from the data mode = 15
but given
median= mode=15
we know that the relation between 3 is
mode = 3median-2mean
15=3*15-2mean
15-45=-2mean
-30=-2mean
-30/-2=mean
therefore
mean =15
2) mean =(sum of the observations)/(number of observations)
15=(10+15+20+25+15+x)/6
90=85+x
90-85=x
5=x
x=5
but given
median= mode=15
we know that the relation between 3 is
mode = 3median-2mean
15=3*15-2mean
15-45=-2mean
-30=-2mean
-30/-2=mean
therefore
mean =15
2) mean =(sum of the observations)/(number of observations)
15=(10+15+20+25+15+x)/6
90=85+x
90-85=x
5=x
x=5
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