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【单选题】
An organisation is using linear regression analysis to establish an equation that shows a relationship between advertising expenditure and sales revenue. It will then use the equation to predict sales revenue for given levels of advertising expenditure. Data for the last five periods are as follows: What are the values of ‘Σx’, ‘Σy’ and ‘n’ that need to be inserted into the appropriate formula?A.
$600,000 $100,000 5
B.
$100,000 $600,000 5
C.
$600,000 $100,000 10
D.
$100,000 $600,000 10
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【简答题】金边六月雪的叶序是 。
【单选题】Their reply was too ______ for anyone to doubt them.
A.
eloquent
B.
effective
C.
emotional
D.
emphatic