0
You can have a scatter plot where the data is displayed as a collection of points.
You can also have a dot plot where a set of data is represented by placing dots over a number line to represent the frequency of data.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the sum of all the data points divided by the number of data points?
the average
Why should you draw a smooth line that reflects the general pattern rather than automatically connect the data points?
A line of best fit emphasizes the overall trend shown by all the data taken as a whole whereas if you just "connect the dots", the lines could be all over the place.
What is the difference of average and media?
Average is the sum of all data points divided by the number of data points. Median is the data point that is exactly halfway between the lowest and highest data points.
Why is a best fit line used to find slope instead of using the data points?
Because the data points are generally not all in line with each other. If you connect the dots,from one data point to the next and then to the next, you usually get a zig-zag line of manysegments, where the slopes of the segments are all different and cover a wide range. It wouldbe impossible to decide what the "real" slope of the data is. The "best fit" line is a line that findsthe pattern buried in the zig-zag data, giving each data point its best share of determining the bestsingle equation to represent the whole batch of points. That's why it's called "best".
What is the mean average of this data?
Add up all the values and divide by the number of data points.
Is it true that all data points have to be shown?
The answer depends on the purpose of the plot.
Do you get points in scrabble when adding a blank?
No, the blank itself has no value, but when placing it at the end of a word (like, say, HORN), placing a blank (making it an S, for HORNS) will give you the amount of points allotted for just HORN, with all word-based premiums considered as well should the blank be placed on them.
Is it possible to have a standard deviation of less than one?
Anand Mehta said yes and this is correct. You will get a SD, for example, if all of the data points are less than one, or if the data points are very close together and there is not much spread in the data..
Does a best fit line connect all of the data points in a line graph?
yes
A line of best fit will go through all of the plotted data points?
false
Does the best-fit line have to go through all data points on a graph?
False
Why does best fit line does not touch all data points?
Because the "best fit" line is usually required to be a straight line, but the data points are not all on one straight line. (If they were, then the best-fit line would be a real no-brainer.)
