Is this right?? Letter C.
2 answers:
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Answer:
Media = 4.1
Mediana = 4
Moda = 4
Step-by-step explanation:
3 personas obtuvieron 5 puntos
5 personas obtuvieron 4 puntos
2 personas lograron 3 puntos
a. La media se da como:
Media = suma total de marcas / número de personas
Por lo tanto, la media será:
b. Para obtener la mediana, tenemos que organizar los términos en consecuencia y encontrar el número en el medio.
3, 3, 4, 4, 4, 4, 4, 5, 5, 5
Como no hay un número único en el medio, la mediana es:
(4 + 4) / 2 = 8/2 = 4
c. La moda es el número que aparece más, y eso es 4
Answer:
Step-by-step explanation:
Remark
Always the easiest way to study these questions is to get a graph. The one below shows
Red: y = x^2
Blue: y= 3(x + 1)^2
You will notice that (x+1)^2 shifts the graph Left -- the opposite to what you might think.
The 3 is a little harder. It narrows the red mother graph. Which choice says that?
The choice is between b and d. Why. Because the blue graph is to the left of the red one.
You have to learn the meaning of compressed. A better word might be narrows.
Answer
B
