RESEARCH METHODS - analysis and interpreaion of correlations

Question 1

what is a correlatino

Answer 1

math technique which emasures relationship /association between two continous variables (co variables)

Question 2

two continous varibale properly called

Answer 2

co varibales

Question 3

correlatins are plotted on a

Answer 3

Scattergram

Question 4

for correlations in a scattergram whats on the x and y axis

Answer 4

one of co variables beeing investigated

Question 5

statistical tests of correlation when calculated produces numerical value of

Answer 5

-1 to +1

Question 6

what is a correlation co efficent

Answer 6

number between -1 and +1 that represents direction and strenght of arelationship between co variables

Question 7

what does a correlatino co effiient of +1 represent

Answer 7

perfect positive correlatin

Question 8

what does correlaiton co efficient of -1 represent

Answer 8

perfect negatove correlatino

Question 9

the closer the correlation co efficient between + or -1

Answer 9

the stronger the relationship between co variables

Question 10

the closer to 0 the correlation co efficent is

Answer 10

the weaker the relationship is

Question 11

true or fasl +.50 and -.50 both as strong relaitonship as each other

Answer 11

yes

sign just indnicates direction

Question 12

co efficents that can appear ot indicate a weak correlation can be

Answer 12

statistically signifinat

depedsn on size of data set

Question 13

what do descriptive statistics refer to

Answer 13

graphs , tables, summary stats (such as measures of central tendency and measures of dispersion)

Question 14

what are descriptive statistics used to identify and analyse

Answer 14

identify trends

analyse sets of data

Question 15

inferential statsitics refer to use of

Answer 15

stat test whihc tells researcehrs whether differnce or relationships are found are statistically significant

Question 16

strenght of correlaitons in psycholgiical research

Answer 16

measure strenght and direction of a correaltion

and thers no manipulation of variables

so theyre useful when manipulation is practically or ehtically impossible

Question 17

limitainos of correlatinos in psycholgical research

Answer 17

no manipulation of variables therefore , impossible to establish casue and effect between two variabels uner investigation - only a realtnoship

variables have to be quanitifed to be measured which can affect the construct vaidity of the findings w

Question 18

what is construct validity

Answer 18

whether a measure successfully measures the concept it is supposed to