The number of newly reported crime cases in a county in New York State is shown in the accompanying table, where x represents the number of years since 2010, and y represents number of new cases. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest tenth. Using this equation, find the projected number of new cases for 2021, rounded to the nearest whole number.
Years since 2010 (x) New Cases (y)
0 1151
1 1131
2 1198
3 1190
4 1251
5 1236

5

...

Step-by-step explanation:5

The interquartile range of both sets is equal to 1 hour.

The data sets exhibit similar variability, or spread.

Step-by-step explanation:

Here is the question (attachment).

Random survey of the seventh and eighth grades students.

Interquartile range (IQR) :

       The IQR is the range of the middle 50% of scores.

       IQR = Upperquartile - Lowerquartile

       IQR = Q3 -Q1

       IQR of (seventh grader) =

       IQR of (eight grader) =

Normal curve represents perfect symmetric distribution as median and mean lie on the same position so they are neither negatively skewed nor positively skewed.None of the data is skewed more or less.Regarding the spread it exhibits similar variability.In similar variability the range is same.Range is the difference between highest and lowest values.Range =

Conclusion:

The interquartile range of both sets is equal to 1 hour.

The data sets exhibit similar variability, or spread.