在Word中,可用于计算表格中某一数值列平均值的函数是
(A)Average() (B)Count() (C)Abs() (D)Total()
金山WPS Office中包含的组件有______。
A) 金山快译 B) 金山文字 C) 金山解霸 D) 金山表格
E) 金山演示 F) 金山毒霸
A.0.8
B.8/9
C.1
D.NUM!
A.AVERAGE(A2,A12)
B.AVERAGE(A2:A12)
C.AVERAGE(A1,A12)
D.AVERAGE(A1:A12)
19.单元格A1到A5分别为3、5、12、8、10,则AVERAGE(A1+A2,A3:A5)值为______。
A.1行1列至3行4列12个单元格相加
B.1行1列与3行4列相加
C.1行1列与4行3列相加
D.1行1列到1行4列相加
A source has five letters with following probabilities:P(a1)=0.3,P(a2)=0.2,P(a3)=0.2,P(a4)=0.15,P(a5)=0.15 These letters are to be coded into binary digits for use on a noiseless channal.It takes 1 second to transmit a 0 and 3 seconds to transmit a 1.Using cut and try techniques,find a code with the prefix condition that minimizes the average time required to transmit a source letter and calculate this minimum average time. (2)Any such code can be represented by a tree in which the length of a branch:is proportional to the time required to transmit the associated digit.Show that for a code to minimize the average transmission time,the probabilities associated with intermediate and terminal nodes must be nonincreasing with length.
【题目描述】
第 48 题Excel:
考试要求:
1.将标题字体格式设置为:隶书,21号,粗体,放置于表格正上方。(1分)
2.利用公式Average统计上述五国的金、银、铜牌平均数,放置于相应位置。(2分)
3.利用公式Sum统计上述五国的金、银、铜牌总数,放置于相应位置。(2分)
【我提交的答案】:1、 选中标题,单击字体为隶书。字号为21号, 2.
【参考答案分析】:答案略
【我的疑问】(如下,请求专家帮助解答)