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Answer:
2 : 3 dots up
2.25 : 3 dots up
2.5 : 4 dots up
2.75 : 4 dots up
3 : 2 dots up
3.25: 0 dots up
3.5 : 2 dots up
The dot plot for the considered data is plotted based on how many times each observation occured (given by frequencies), as plotted in the image attached.
How does dot plot works?
Suppose we're measuring something whose values are numeric. For each value of that thing we observe, we plot a dot above that value in number line. Thus, the total number of dots in the dot plot tells us the total number of observations of the values of that thing we did.
Thus, suppose if we observed the value 'x', then we will make a dot above 'x'. If there is already a dot over 'x', then we will make a new dot over that dot.
If instead of only observations, the table of unique observation and frequency is given, then we plot dots that many times as the count written in the frequency table.
Thus, if its written that the value 2 has 3 has its frequency, then we plot 3 dots one over the other above the value 2 in the horizontal axis.
For this case, we're given the unique observation to frequency table as:
Diameter (cm) Frequency
2 3
2.25 3
2.5 4
2.75 4
3 2
3.5 2
That means, over the value 2, plot 3 dots (as diameter 2 occured 3 times), and so on, over the value 3.5, plot 2 dots.
The dot plot of the considered data is attached below.
Learn more about dot plot here:
https://brainly.com/question/22746300
