En un test realizado a un grupo de 42 personas se han obtenido las puntuaciones que muestra la tabla. Calcula la puntación media y da la conclusión respectiva clase f 10-19 20-29 30-39 40-49 50-59 60-69 70-79 n fi 1 8 10 9 8 4 2 ?

Answers

Answer 1

Answer:

Puntuación media = 42.83

La clase del puntaje promedio es 40-49

Explanation:

In Spanish/En español

El puntaje promedio para los datos agrupados se obtiene utilizando el método del punto medio. Es decir, el punto medio de cada clase se usa para representar el valor de la clase en el cálculo del promedio.

Clase | f | punto medio

10-19 | 1 | 14.5

20-29 | 8 | 24.5

30-39 | 10 | 34.5

40-49 | 9 | 44.5

50-59 | 8 | 54.5

60-69 | 4 | 64.5

70-79 | 2 | 74.5

El promedio es la suma de variables dividida por el número de variables.

Promedio = (Σfx)/(Σf)

Σf = 1+8+10+9+8+4+2 = 42

Σfx = (1×14.5) + (8×24.5) + (10×34.5) + (9×44.5) + (8×54.5) + (4×64.5) + (2×74.5) = 1799

Promedio = (1799/42) = 42.833

La clase del puntaje promedio es 40-49

¡¡¡Espero que esto ayude!!!

English Translation

In a test carried out on a group of 42 people, the scores shown in the table have been obtained. Calculate the average score and give the respective conclusion class f 10-19 20-29 30-39 40-49 50-59 60-69 70-79 n fi 1 8 10 9 8 4 2

Solution

The average score for grouped data is obtained using the midpoint method. That is, the midpoint of each class is used to represent the value of the class in the calculation of the average.

Class | f | midpoint

10-19 | 1 | 14.5

20-29 | 8 | 24.5

30-39 | 10 | 34.5

40-49 | 9 | 44.5

50-59 | 8 | 54.5

60-69 | 4 | 64.5

70-79 | 2 | 74.5

The average is the sum of variables divided by the number of variables

Average = (Σfx)/(Σf)

Σf = 1+8+10+9+8+4+2 = 42

Σfx = (1×14.5) + (8×24.5) + (10×34.5) + (9×44.5) + (8×54.5) + (4×64.5) + (2×74.5) = 1799

Average = (1799/42) = 42.833

The class of the average score is 40-49.

Hope this Helps!!!


Related Questions

Read and match each incomplete sentence with the correct word or phrase to complete it.

Match Term Definition
Ana y Yasif dan la cena a ________. A) un comedor de beneficencia
El proyecto necesita ________ de tres meses. B) un proyecto de acción social
Mayra es voluntaria en ________ en su edificio. C) unas personas sin hogar
Pablo es cocinero en ________ en su ciudad. D) una planificación

Answers

Ana y Yasif dan la cena a unas personas sin hogar

El proyecto necesita una planificación de tres meses

Mayra es voluntaria en un proyecto de acción social en su edificio

Pablo es cocinero en un comedor de beneficencia en su ciudad

The complete sentences are:

Ana y Yasif dan la cena a unas personas sin hogar.El proyecto necesita una planificación de tres meses.Mayra es voluntaria en un proyecto de acción social en su edificio.Pablo es cocinero en un comedor de beneficencia en su ciudad.

What is the sentence about?

The translation of the sentences above are:

Ana and Yasif give dinner to some people without them.The project needs a three-year plan.Mayra volunteers in a social action project in her home .Pablo is a cook in a charity dining room in her city.

Looking at he above, you will see that the words that is used for the fill up rightly fit into the sentence and as such the sentences are correct.

Learn more about Spanish sentence from

https://brainly.com/question/7150507

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Andrea compró 2 litros 14 de detergente, María le regaló 3 litros 13 y Rosa le pidió 1 litro 12 de detergente. ¿Cuántos litros de detergente tiene en total Andrea?

Answers

Andrea tiene 4 litros 15 de detergente

Andrea tiene 4 litros de detergente

Imagine you are planning an evening in Mexico City. Write a short paragraph in Spanish in which you discuss where you are going, what you are going to do, and what modes of transportation you are taking. The plans for the evening will be more enjoyable if you have other people with you, so include a couple of friends. Write a 7-sentence paragraph about your plans. (14 pts)

Answers

Answer:

Pienso ir a un parque de diversiones con mis 3 mejores amigos, pensamos ir en un taxi yaa que somos pocas person, compraremos boletos para montarnos en las atracciones y a la salida compraremos algo de comer.

Explanation:

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