Unit 3, Lesson 8
Usemos el coeficiente de correlación
Álgebra 1
8.1
Warm-up
Pongamos los números en contexto
Asocia la pareja de variables de cada fila con el diagrama de dispersión al que crees que se ajustan mejor. Prepárate para explicar tu razonamiento.
| variable |
variable |
|
|---|---|---|
| 1. | temperatura mínima diaria en grados Celsius de Denver, CO | cajas de cereal que hay en un supermercado en Miami, FL, en un día dado |
| 2. | número de tiros libres lanzados en un partido | puntaje del equipo de baloncesto en un partido |
| 3. | estatura de un estudiante en pies | estatura de un estudiante en pulgadas |
| 4. | número de minutos que una persona espera a ser atendida en el hospital | calificación de satisfacción con el hospital dada por una persona |
AScatterplot, origin O. Horizontal from 0 to 8, by 1’s. Vertical from 0 to 80, by 10’s. 13 points that represent the data, clustered in the upper middle portion of the graph and trend linearly upward and to the right. First data point approximately begins at 4 point 8 comma 58 and last is approximately at 6 point 3 comma 74.
BScatterplot, origin O. Horizontal from 0 to 33, by 3’s. Vertical from 0 to 130, by 10’s. 20 points that represent the data, clustered in the upper middle portion of the graph and trend mostly upward and to the right. First data point approximately begins at 13 comma 80 and last is approximately at 25 comma 95. Highest point is approximately at 22 comma 120.
CScatterplot, origin O. Horizontal from 0 to 33, by 3’s. Vertical from 0 to 130, by 10’s. 21 points that represent the data, clustered together in the upper middle portion of the graph. A few data points in the center of the cluster are approximately 16 comma 95, 19 comma 105, and 21 comma 97.
DScatterplot, origin O. Horizontal from 0 to 135, by 15’s. Vertical from 0 to 10, by 1’s. 21 points that represent the data, clustered at the top left first and then widely spread, trend downward and to the right. First data point approximately begins at 7 point 5 comma 8 and last is approximately at 128 comma 5.