The slope of the trend line is the rate of change of the data. It is the ratio of the change of the dependent variable to the rate of change of the independent variable. Slope represents the value of the correlation.
The slope of the trend line is the rate of change of the data. It is the ratio of the change of the dependent variable to the rate of change of the independent variable. Slope represents the value of the correlation.
Scatter graphs are best. Line graphs are OK if the trend is linear but not much good if the trend is non-linear.
There are many methods, though the most popular is the method of least squares. This method minimises the sum of the squares of the vertical distances between each point and the corresponding point on the line.
I believe you are asking how to identify a positive or negative correlation between two variables, for which you have data. I'll call these variables x and y. Of course, you can always calculate the correlation coefficient, but you can see the correlation from a graph. An x-y graph that shows a positive trend (slope positive) indicates a positive correlation. An x-y graph that shows a negative trend (slope negative) indicates a negative correlation.
The line on the graph that shows what the data is saying.
The IQR gives the range of the middle half of the data and, in that respect, it is a measure of the variability of the data.
Jeremy surveyed students in his class about their spending habits in the school cafeteria. He used the data to create a scatterplot. How Students Spend Money in the Cafeteria Which is the equation of his trend line?
It can be a scatterplot, or grouped bar chart.It can be a scatterplot, or grouped bar chart.It can be a scatterplot, or grouped bar chart.It can be a scatterplot, or grouped bar chart.
It is the description of a slope of a line which connects from many points you mark to show a way that your graph data may increase or decrease. If it is decreasing, you have a downwards trend. If it is increasing, you have an upwards trend.
Scatterplot
Scatter graphs are best. Line graphs are OK if the trend is linear but not much good if the trend is non-linear.
A scatterplot.
A scatter graph.
There are many methods, though the most popular is the method of least squares. This method minimises the sum of the squares of the vertical distances between each point and the corresponding point on the line.
scatter plot
scatter plot
It is a description of the Slope of the line with respect to the two variables you are plotting. In Statistics, you may be plotting AGE versus Car Mileage and a line drawn through the data is the Trend Line.
it is a description of the Slope of the line with respect to the two variables you are plotting. In Statistics, you may be plotting AGE versus Car Mileage and a line drawn through the data is the Trend Line.http://wiki.answers.com/What_does_a_trend_mean_on_a_line_graph#ixzz18qYakrsc