There are three children in a room. The ages of the children, in years, are three,...
There are three children in a room. The ages of the children, in years, are three, four, and five. If another four-year-old child enters the room, then which of the following things will definitely happen?
Select one:
a. The mean age and variance will decrease.
b. The mean age will stay the same but the variance will increase.
c. The mean age will stay the same but the variance will decrease.
d. The mean age and variance will stay the same.
e. The mean age and variance will increase.
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through (d) below.
Questions and tables are attached
Age, x Vocabulary size, y 260 550 1100 2100 2500 680 2300 270 1200 2400 4 4 Critical Values for the Pearson Correlation Coefficient The correlation is significant when the absolute value of is greater than the value in the table α 0.05 0.950 0.878 0.811 0.754 0.707 0.666 0.632...
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