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.
y=mx+b trend line or line of best fit is best described as a line that approximates the relationship between the sets of data of a scatter plot.
Scatter graphs are best. Line graphs are OK if the trend is linear but not much good if the trend is non-linear.
A scatter graph.
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.
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.
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
I am assume that you mean the slope of a graph. We find the local maximum and minimum of a graph by comparing the slope (the tangent to the curve) at each point. When the graph is reaching either a maximum or minimum, the slope becomes zero. This finding-the-zero-slope task is normally done with computer programming or Excel. Another use is that the change in slope indicates a change in the rate. Let us say we are plotting the water level in a river to see when the dam will be breached. If the slope keeps increasing, you can predict, at the present rate of change, when the water will overflow. If the slope of water keeps decreasing, you can predict, at the same rate, when do we run out of water. Using the slope for prediction needs to be done carefully -- how much do you trust the data and how long can you project into the future without being unrealistic. The chartists use the slope to predict the trend of stock prices. The government uses the slopes of different sets of data to plan policies. And so on. ==========================
In mathematics, if the data in a set shows no relation, then that set shows no trend.
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Yes they can.
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.
Trend analysis is the study of data wherein data is looked at closely to see if any patterns exist within the set. It is important because it could clue someone in on what is happening within their data. For instance, trend analysis is used to determine the most popular products in a store at a given time.
B/c it can help to display the subsets in the data. It is also a good way to double check the data and scatterplot.
A data point that is significantly outside of the rest of the trend.
the line that connects the trends of data on a graph