Question

7. How would the following mathematical operation be expressed in summation notation? "Subtract four points from each score and find the sum of the resulting values. EX-4 6. EX-4) a. 4-EX C. (x-t3 P the actual research is typically conducted with a 8. Although research questions usually sample, statistic b. population, parameter sample, population d population, sample concern a a. C. 9. You are instructed to add 1 point to each score, then square the resulting values, and then find the sum of the squared numbers. In summation notation, this set of operations would be expressed (EX+ 1) as a. ECX+ 1) b c. EC+1) d x+1

Answer 1

Q. 7.

​​​​​​here we have to find notatiom for subtract four from each score so it is x -4 and there sum is $\sum (x-4)$

The answer is option b )$\sum (x-4)$

Q.8

Although research questions usually concerns a population

the actual research is.typically conducted a sample.

The answer is option d) population,sample.

Q.9

here we have to add a 1 point in each score so it become x+1

Now sum of these is $\sum (x+1)$ and the square of this sum is

$\sum (x+1)^{2}$

Therefore the answer is option is b $\sum (x+1)^{2}$ ​​​​​​​