If we assume that the conditions for correlation are met, which of the following are true? if false, explain briefly.

(a) a correlation of 0.02 indicates a strong possitive association
(b) standardizing the variable will make the correlation 0
(c) adding an outlier can dramatically change the correlation

A. False,

B. False,

C. True.

Step-by-step explanation:

We have been given three statements about the correlation. We are asked to determine which of the given statement are true.

(A) A correlation of 0.02 indicates a strong positive association.

We know that a correlation coefficient close to 1 represents positive association and a correlation coefficient close to 0 represents negative association.

Since our given correlation coefficient is close to 0, therefore, it represents negative association and given statement is false.

(B) Standardizing the variable will make the correlation 0.

We know that standardizing the variable does not change the correlation.

If correlation between the variables was 0, then the correlation between standardized variables also will be 0. Therefore, the given statement is false.

(C) Adding an outlier can dramatically change the correlation.

We know that correlation is strongly influenced by outliers, therefore, the given statement is false.

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.