replace four with the number 4
the oroduct if 7 means we multiply the variable y by the constant 7 using the () operator
7y
the phrase more than means we add the term 7y to 4 using +
4+7y
Z score=(data value-mean)/standard deviation
z=(90-100)/15=-0.6666666667
Answer: The median of the upper half of a set of data is the upper quartile ( UQ ) or Q3 . The upper and lower quartiles can be used to find another measure of variation call the interquartile range . The interquartile range or IQR is the range of the middle half of a set of data.
Step-by-step explanation:
