100*(250÷25.02) - ?×10 = 400
50
40
60
70
None of these
100*(250÷25.02) - 60×10 = 400
Find the mean of the step deviations: Class intervalFrequency(fi)Class mark(xi)di=xi−aui=dih0−1004050−200−2100−20039150−100−1200−3003425000300−400303501001400−500454502002
If the mean of the given data is 250, then find the value of p. Class interval Frequency0−1007100−20011200−30015300−400p400−5008 [2 MARKS]