皮皮学，免费搜题
登录
搜题
【简答题】
以下是一组选择题的答案：A、B、B、D、C、B、C、D、C、D、C、A、B、D、C、A、C、D、C、B、B．看到后突发奇想，用1代替A，用2代替B，用3代替C，用4代替D．得到这样一组数据：1、2、2、4、3、2、3、4、3、4、3、1、2、4、3、1、3、4、3、2、2．并对数据进行处理．现在请你帮助他完成以下操作： ①计算这组数据的平均数和中位数（精确到百分位） ②在得出结论前提出了几个猜想，请你帮助他分析猜想的正确性（在后面“横线”中打√或×） A、若这组数据的众数是3，说明选择题中选C答案的居多______ B、若这组数据的平均数最接近3，可间接说明选择题中选C答案的居多______ C、若这组数据的中位数最接近3，可间接说明选择题中选C答案的居多______ ③相信你一定做出了正确的选择．接下来，好奇的又对一组判断题进行了处理（用1替换√，用2替换×）然后计算平均数为1.65更接近2，于是得出结论：判断题中选答案×的居多．请你判断这个结论是否正确，并用计算证明你的判断．
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】How did Fiona respond to her home - schooling ?
A.
She was eager to learn what was planned for her.
B.
She did not seem to be happy about it.
C.
She was unhappy at first, but became enthusiastic about it later.
D.
She was reluctant to follow her mother’s instructions.
【单选题】The doctor, not wishing to alarm her, did not tell her how serious her condition was.
A.
这位医生不顾她的警告，没有认真地告诉她的实况。
B.
这位医生不希望她惊慌，没有把她的严重病情告诉她。
C.
为了不让她惊慌，这位医生没有把她的严重病情告诉她。
D.
为了不让她惊慌，这位医生没有认真地告诉她实况。
【简答题】How did Ann feel after she opened her eyes?
【简答题】v. 象征,代表
【单选题】It is my favorite book which is about _________．
A.
how did Alice find her lost parents
B.
what did Alice find her lost parents
C.
how Alice found her lost parents
D.
what Alice found her lost parents
【简答题】Why did Miriam give up her relation with Max?
【单选题】How did Glenn help the firemen to save his mother?
A.
By throwing water all over her and her bed.
B.
By carrying her to safety with his brother.
C.
By pushing and pulling at her.
D.
By tying a string to her hand.
【简答题】代表,象征,意味着,v.
【单选题】How did Frank save Lisa?
A.
By lifting her to the platform.
B.
By helping her rise to her feet.
C.
By pulling her along the ground.
D.
By dragging her away from the edge.
相关题目：