2. (15 puntos) Calcule el promedio, la mediana y la moda de los siguientes datos: \[ \begin{array}{lllllll}46 & 219 & 2,4,2,6,8,2,5,2,2\end{array} \] 3. (15 puntos) Con la siguiente información realice el gráfico más apropiado

What does it mean to say that a data point has a residual of 0 ? A. The predicted value for that point is 0 . B. The point lies directly on the regression line. C. The point lies above the regression line. D. The point falls at the origin.

Which of these r -values represents the strongest correlation? A. -0.4 B. -0.7 C. -0.5 D. -0.6

A data set consists of the following data points: \[ (2,4),(4,7),(5,12) \] The line of best fit has the equation \( y=2.5 x-1.5 \). What does this equation predict for a value of \( x=7 \) ? A. 19 B. 17.5 C. 16 D. 20.5

Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4140 patients treated with the drug, 137 developed the adverse reaction of nausea. Construct a \( 90 \% \) confidence interval for the proportion of adverse reactions. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)

Suppose the correlation coefficient between a baby's weight and the number of coffee shops in Plumville is 0.87 . Which statement must be true? A. As the baby gains weight, the number of coffee shops tends to increase. B. Having more coffee shops around causes the baby to gain weight. C. As the baby gains weight, the number of coffee shops tends to decrease.