140f 130- 120- 110- 100- 90- 80 70 60 50 40 30 20 10 20 40 60 80 100 120 140 160 180 200 Grip Strength kamine the scatterplot displayed above and choose the most appropriate escription for the relationship between the variables in the plot. independent nonlinear relationship negative association Arm Strength

What type of graph would be appropriate for this data set and why? what is the dependent variable and independent of the experiment? Based on the information provided, which tree is the most important to the environment? Explain your answer

KidsFeet Scatterplot Grouped by Sex The KidsFeet dataframe contains data collected on 39 fourth grade students in Ann Arbor, MI, in October 1997. Two of the measurements taken on the children were the length, (length), and width, (width), of their longest foot. Based on the scatterplot shown below, there appears to be a positive linear association between the length and width of a fourth grader's biggest foot that holds even when the child's sex is accounted for. Which of the following lines of code created this scatterplot (except for the title and axis labels)?   ( ) xyplot(length~width, groups=sex, data=KidsFeet) ( ) xyplot(length~width, groups=sex, data=KidsFeet, auto.key=TRUE) ( ) xyplot(width~length,groups=sex,data=KidsFeet, auto.key=TRUE) ( ) xyplot(width~length, data=KidsFeet) ( ) xyplot(width~length,groups=sex,data=KidsFeet) ( ) xyplot(length~width, data=KidsFeet) ( ) xyplot(width~length|sex,data=KidsFeet) ( ) xyplot(length~width|sex, data=KidsFeet)

A     marketing     manager     conducted     a     study     to     determine     the     relationship     between    money    spent    on    advertising    (X)    and    company    sales    (Y).        The    study    consisted    of    8    companies    and    the    data    is    given    below    and    is    in    units    of    $1000s    (ie.    2.4    =    $2400.00) a. Report    dependent    and    independent    variables    in    this    study.    Independent    variable:    ________________________________________________________________Dependent    variable:    __________________________________________________________________Both    variables    are    what    type    of    data? [Circle    one:]            Numerical                            Categoricalb. Write    out    the    linear    model/regression    equation    using    the    average    money    spent    on    advertising    to    predict    the    company    sales.        Do    not    round.  c. Find     the…