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The best fit line is helpful in estimating values of data points?
True
What is an outlier in 98 85 34 79 85 92?
35 would be the outlier in the values 98 85 34 79 85 92. All the other values are fall in a range of 20 points whereas 35 is 40+ points away from this range.
When is the correlation coefficient closest to 1?
When x and y values of points agree in a linear relationship
What is the difference between estimating and guessing?
When you are estimating, you're making an educated "guess". For example, if there's water in a cup, you see that the water is clearly between 300 mL and 310 mL, so an estimation would be anything in between those two values. When you are guessing, you have no foundation to base it on. For example, lets take the water in the cup again. W/o looking at the measurements at all, with no knowledge you make the statement: The cup has about 1000mL of water.
What is the median in a set of data?
The middle value so half the data is above it and half the data is below it. It is often used because extreme values tend to affect it less than other measures of central tendency. If you have an even number of data points, the median is the mean of those two points. ( So you add the two values and divided by two)
