If a scatter plot shows points that are closely clustered together, what can you infer about the correlation between the variables?

On an examination the average grade was 74 and the standard deviation was 7 . If \( 10 \% \) of the class are given A's and the distribution of grades is to follow a normal distribution. Then the lowest possible A and highest possible B if z.10=1.28 is: \( \begin{array}{ll}\text { (a) } 83 \text { and } 82 & \text { (b) } 84 \text { and } 83 \\ \text { (c) } 85 \text { and } 84 & \text { (d) } 82 \text { and } 81\end{array} \)

El valor que falta para que sea la mediana aritmética de los siguientes datos: \( 100, \square, 300 \) \begin{tabular}{|l|}400 \\ 350\end{tabular} 50.200

What is a scatter plot?

What is a scatter plot?

\( A \) is students who learn English. \( B \) is students who learn french. \( C \) is students who learn Khmer. \( n A \) is \( 18, n B \) is \( 18, n C \) is \( 26, n A n C \) is \( 13, n B n C \) is \( 11, n A n B n C \) is \( 6, n A u B u C \) is 35. How many students learn french and English?