Cone and hemisphere (xv) While computing mean of a grouped data, we assume that the frequencies are :
(a) evenly distributed over all the classes
(6) central at the upper limits of the classes
(c) central at the class marks of classes
(d) centred at the lower limits of class​

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.