简述消费者购买决策过程的基本步骤。
参考答案:
1、需求确认
2、搜集资料
3、购前评估
4、购买决策
5、购后行动
Daniel goes to the computer Club____________[ ]
A. every Tuesday and Thursday afternoon
B. on every Tuesday and Thursday afternoon
C. in Tuesday and Thursday afternoon
D. at Tuesday and Thursday afternoon
()表示极差。
A.绝对偏差的绝对值之和的平均值
B.平均偏差与测量均值的比值
C.一组测量值内最大值与最小值之差
D.测量值与真值之差