一组数据5，4，7，y，2，2，7，x的众数是5，则平均数是______，中位数是______．
数据5，4，7，y，2，2，7，x的众数是5，即5的次数最多；
而2 7都出现2次．
根据题意，故5必须出现3次，
即x=y=5．
则其平均数为
（5×3+4+7×2+2×2）=4.625．1 8
根据中位数的求法可知中位数是5．
故填4.625，5．
move or indicate without speaking. Watch what people from different cultures do when they introduce themselves. Some _ 1 _ the person they are greeting and kiss them on the __2__ , some kiss on both cheeks, some shake hands, some bow, some beat the __3__ and some just nod as it is not their custom to __4__ the other person. In __5__, it is very important to avoid __6__ each other. Learn what a yawn __7__ in the culture of the people you are meeting. It is likely to be a rude __8__ to some. So be very careful how you carry yourself and how you __9__ yourself when in another country. We are all in __10__ about one thing: we are all anxious to communicate with other human beings. It is how we do it that differs! |