covariance- (statistics) the mean value of the product of the deviations of two variates from their respective means Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. statistics plural noun
In statistics, it’s actually rare that you can calculate the population mean. That’s because asking an entirepopulationabout something is usually cost prohibitive or too time consuming. For example, one veterinary practice probably keeps weight records of all the pets that come in the door, en...
In a socialist society, statistics, as the main element in a single, uniform system of national economic record-keeping, is a crucial means of state control and planned management of the national economy. The collection, processing, and analysis of statistical information for the entire country ...
In general, the sample in statistics describes those individuals we get data from. While there are many ways to take a sample, some sampling methods are better than others. In statistics, even when working with samples, statisticians want to describe an entire popul...
The Hypothesis Test for a Difference in Two Population Means The general steps of this hypothesis test are the same as always. As expected, the details of the conditions for use of the test and the test statistic are unique to this test (but similar in many ...
据国家统计局的消息，我国将于2025年开展全国人口抽样调查，在全国共抽取约500万户、1400万人，抽样比例为全国人口的1%。China will launch a nationwide population sample survey in 2025, according to the National Bureau of Statistics (NBS). Some 14 million people from about five million households, or 1...
Suppose that in the sample we take, $60\%$ of the voters prefer Alice. For a sample size of $100,$ that means we had $60$ responses for Alice. So it looks like Alice is ahead of Bob, doesn't it? But how sure are we? To assess the accuracy of our poll, we ...
据国家统计局的消息,我国将于2025年开展全国人口抽样调查,在全国共抽取约500万户、1400万人,抽样比例为全国人口的1%。 China will launch a nationwide population sample survey in 2025, according to the National Bureau of Statistics (NBS). Some 14 million people from about five million households, or 1...
number of population aged 15 to 64 times 100. Ages 15 to 64 here are the working group, where in 0-14 years old and 65 and above years are the non working group. A high ratio means those of working age, and the overall economy, face a greater burden in supporting the aging ...
Statistics such as averages or means andstandard deviationsare referred to as population parameters when they're taken from populations. Many such as a population's mean and standard deviation are represented by Greek letters like µ (mu) and σ (sigma). These statistics are inferential in nat...