Estadísticas preguntas y respuestas

63. Sea \( \mathbf{p} \) la desviación estándar de los 5 primeros números primos. Si se resta 1 , a cada uno de estos números, entonces la varianza del nuevo conjunto de números es A) \( p-5 \) B) \( 5-p \) C) \( (p-5)^{2} \) D) \( p^{2} \) E) \( p^{2}-5 \)

What is a scatter plot?

How do you identify the relationship between two variables in a scatter plot?

إذا كان معامل الارتباط \( r=0.93 \) فهذا يعني ان هناك علاكة توية طرية

En un colegio están midiendo la cantidad de inasistencia diaria a un curso de 45 alumnos, sea \( x \) una variable aleatoria que indica cuántos alumnos han faltado en un dia. A continuación se presenta la función de cuantia: \( P(X=x)=\left\{\begin{array}{l}\frac{(x+1)}{145} \\ \frac{(x+2)^{2}}{145} \\ 0.20\end{array} \quad x=0,1,2\right. \) Determine la dispersión lineal de alumnos que faltan un día.

What is a scatter plot?

What is a scatter plot?

How do you identify the relationship between two variables in a scatter plot?

What is a scatter plot?

In a survey of 258 professional athletes, it was found that 122 of them owned a convertible, 117 of them owned a giant screen TV, and 113 owned a sporting goods store. 21 owned a convertible and a store, 44 owned a TV and a store, and 66 owned a covertible and a TV. 10 owned all three items. 1. How many athletes did not own any of the three items? 2. How many owned a covertible and a TV, but not a store? 3. How many athletes owned a convertible or a TV? 4. How many athletes owned exactly one type of item in the survey? 5. How many athletes owned at least one type of item in the survey? 231 6. How many owned a TV or a store, but not a convertible?