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提问人:网友strongbeing 发布时间:2022-01-07
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Spearman相关系数衡量分级定序变量之间的相关程度,可以使用代码cor(states,method="spearman")实现

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更多“Spearman相关系数衡量分级定序变量之间的相关程度,可以使用代码cor(states,method="spearman")实现”相关的问题
第1题
•Read the article below about problems in the IT industry, and the questions on the opposite page.

•For each question (13-18), mark one letter (A, B, C or D) on your Answer Sheet.

Problems in the IT industry

In the information technology industry, it is widely acknowledged that how well IT departments of the future can fulfil their business goals will depend not on the regular updating of technology, which is essential for them to do, but on how well they can hold on to the people skilled at manipulating the newest technology. This is becoming more difficult. Best estimates of the current shortfall In IT staff in the UK are between 30,000 and 50,000, and growing.

And there is no end to the problem in sight. A severe industry-wide lack of investment in training means the long-term skills base is both ageing and shrinking. Employers are chasing experienced staff in ever-decreasing circles, and, according to a recent government report, 250,000 new IT jobs will be created over the next decade.

Most employers are confining themselves to dealing with the immediate problems. There is little evidence, for example, that they are stepping up their intake of raw recruits for in* house training, or retraining existing staff from other functions. This is the course of action recommended by the Computer Software Services Association, but research shows its members are adopting the short-term measure of bringing in more and more consultants on a contract basis. However, this approach is becoming less and less acceptable as the general shortage of skills, coupled with high demand, sends contractor rates soaring. An experienced contract programmer, for example, can now earn at least double the current permanent salary.

With IT professionals increasingly attracted to the financial rewards and flexibility of consultancy work, average staff turnover rates are estimated to be around 15%. While many companies in the financial services sector are managing to contain their losses by offering skilled IT stall 'golden handcuffs' - deferred loyalty bonuses that tie them in until a certain date - other organisations, like local governments, are unable to match the competitive salaries and perks on offer in the private sector and contractor market, and are suffering turnover rates of up to 60% a year.

But while loyalty bonuses have grabbed the headlines, there are other means of holding on to staff. Some companies are doing additional IT pay reviews in the year and paying market premiums. But such measures can create serious employee relations problems among those excluded, both within and outside IT departments. Many Industry experts advise employers to link bonuses to performance wherever possible. However, employers are realising that bonuses will only succeed if they are accompanied by other incentives such as attractive career prospects, training, and challenging work that meets the individual's long-term ambitions.

This means managers need to allocate assignments more strategically and think about advancing their staff as well as their business. Some employers advocate giving key employees projects that would normally be handled by people with slightly more experience or capability. For many employers, however, the urgency of the problem demands a more immediate solution, such as recruiting skilled workers from overseas. But even this is not easy, with strict quotas on the number of work permits issued. In addition, opposition to the recruitment of IT people from other countries is growing, as many professionals believe it will lead to

A.their success at retaining their skilled staff.

B.the extent to which they invest in new technology.

C.their attempts to recruit staff with the necessary skills.

D.the ability of employees to keep up with the latest developments.

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第2题
Ayer no _____, porque estaba enfermo.

A、he venido

B、venía

C、vine

D、había venido

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第3题
Questions 29-40

•Read the article below about time management.

•Choose the correct word to fill each gap from A, B or C on the opposite page.

•For each question (29-40), mark one letter (A, B or C) on your Answer Sheet.

Time Management

Until recently, books on how to manage your time at work were seen as a bit of a joke in the business world. Many were enjoyable to read (29) weren't taken seriously.

(30) told their readers to dress well, be positive, decide (31) they were going and then use (32) valuable minute to make sure they got there. One very successful book, first published twenty years (33) and still available in bookshops, is The One-Minute Manager. It tells the story of a keen young man who wants to learn (34) about how to be a top-performing executive. The authors believe that most people

(35) the day putting (36) problems, or when they do try to solve (37) they don't do enough. According (38) the authors, having achievable targets should be a manager's aim. Managers everywhere should read (39) book carefully, in order to benefit from (40) sensible advice.

(29)

A.but

B.or

C.even

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第4题
summary()得到的统计结果中,median代表数值型变量的平均数
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第5题
R中提供了用于创建频数表和列联表的若干种方法,其中prop.table(table,margins)将依照margins定义的边际列表将表中条目表示为小数形式
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第6题
回归模型只有一个自变量
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第7题
线性回归模型包含一个自变量,一个因变量
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第8题
市场营销对于非盈利企业来说并不重要,可有可无。
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第9题
企业的基本职能是市场营销和创新。
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第10题
按照单位成本加上一定百分比的利润加成来制定产品销售价格的方法称为( )定价法。

A、需求导向

B、竞争导向

C、随行就市

D、成本加成

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