(1990). (2010) Mean- 150.32. Mean-125.57
Median-117.17. Media - 123.17
SD - 12.23. SD- 7.01

Some information about auto theft rates (number of auto thefts per 100,000 population) for a sample of 178 cities in two different years is
summarized below. Express this statistical information in words. What changes were there in the overall shape of the variation of this variable? In central tendency? In dispersion?

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)