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【单选题】
在统计中,我们可以将产品的类别用数值进行编码处理,如:1 代表乳制品,2代表肉制品,3代表粮油制品。这种方法叫作( )标度。
A.
名义
B.
序级
C.
等距
D.
比率
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参考答案：
参考解析：
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举一反三
【单选题】When you enter the supermarket, you see shelves full of goods．You walk between the shelves．You carry a shopping basket and put your food in it．You probably hear soft music as you walk．If you hear fast...
A.
which customers like low fat milk
B.
which customers like slow music
C.
where customers enter the meat department
D.
where customers come from