A test of correlation establishes whether there is a linear relationship between two different variables. The two variables are usually designated as Y the dependent, outcome, or response variable and X the independent, predictor, or explanatory variable. The correlation coefficient r has a number ...
a strong linear or nonlinear relationship D. that the data is inaccurate 相关知识点: 试题来源: 解析 C。两变量相关性很高意味着有强的线性或非线性关系。A 选项高相关性不意味着因果关系;B 选项也不一定是一个变量导致另一个;D 选项与数据是否准确无关。反馈 收藏 ...
A correlation is a statistical measure of the relationship between two variables. The measure is best used in variables that demonstrate a linear relationship between each other. The fit of the data can be visually represented in a scatterplot. Using a scatterplot, we can generally assess the r...
In the correlation coefficient, r falls in the range of +1.0 to -1.0, depending on the strength of the relationship between the two variables. An r of 0 indicates that there is no relationship between the two variables. An r of +1.0 describes a positive correlation between two variables, ...
The correlation coefficient between two variables is 0.8. This indicates a A. weak positive correlation B. strong positive correlation C. weak negative correlation D. strong negative correlation 相关知识点: 试题来源: 解析 B。本题考查相关性系数的理解。相关性系数为 0.8,大于 0 且接近 1,表明是强...
Correlation coefficient of two variables 翻译结果2复制译文编辑译文朗读译文返回顶部 Coefficient correlation of two variables 翻译结果3复制译文编辑译文朗读译文返回顶部 Correlation coefficient between two variables 翻译结果4复制译文编辑译文朗读译文返回顶部 Two variables a correlation coefficient 翻译结果5复制译文编...
A. There is a strong negative correlation. B. There is a weak positive correlation. C. There is a strong positive correlation. D. There is no correlation. 相关知识点: 试题来源: 解析 C。本题考查相关系数的意义。相关系数 0.8 表示存在强的正相关。选项 A,相关系数为负时才是负相关;选项 B,...
The R function cor() can be used to compute the correlation coefficient between two variables, x and y. A simplified format of the function is : # x and y are numeric vectors cor(x, y, method = c("pearson", "kendall", "spearman")) - The pearson correlation method computes a parame...
Pearson correlation (r), which measures a linear dependence between two variables (x and y). It’s also known as aparametric correlationtest because it depends to the distribution of the data. It can be used only when x and y are from normal distribution. The plot of y = f(x) is na...
A ___ can be used to visualize the correlation between two variables. A. pie chart B. bar graph C. line graph D. scatter plot 相关知识点: 试题来源: 解析 D。散点图可以用来可视化两个变量之间的相关性。饼图展示比例,柱状图比较类别,折线图展示趋势。反馈...