Do larger universities tend to have more property crime?
University crime statistics are affected by a variety of factors
such as surrounding community, accessibility given to outside
visitors, etc. Let x represent student enrollment ( in thousands)
and let y represent the number of burglaries in a year on the
university campus. A random sample of n = 8 universities in
California yielded the following data regarding the enrollments and
annual burglary incidents.
| x | 12.5 | 30 | 24.5 | 14.3 | 7.5 | 27.7 | 16.2 | 20.1 |
| y | 26 | 73 | 39 | 23 | 15 | 30 | 15 | 25 |
The equation of regression line relating y to x as well as the
coefficient of correlation are computed to be y^=−4.13+1.83x,r=0.76y^=−4.13+1.83x,r=0.76
1. The pridicted number of annual burglary incidents for a
California university with 23 ( thousands) students is about :
[ Select ]
[“38”, “27”, “42”, “32.3”,
“46”]
2. Which of the following conclusions may be made
[ Select ]
[“x and y are moderately
linearly correlated, and y tends to increase as x is increased”, “x
and y are very poorly correlated”, “x and y are almost perfectly
correlated, and y tends to increase as x is increased”, “x and y
are moderately linearly correlated, and y tends to increase as x is
decreases”]
Show transcribed image text y _ _4.13 1.832, r 0.76
y _ _4.13 1.832, r 0.76
