A researcher is investigating the relationship between Economic development (x) and level of education (y) in ten countries. The researcher has interval level measurements for both variables.
Now let’s suppose that the researcher finds a correlation of -.6 between the independent and dependent variables.
The researcher concludes that “Level of economic development explains 60 percent of the variation in the level of education.”
Is this correct? Explain.
Is this correct? Explain.
Ans : Wrong.
Here r^2 = (-0.6)^2 = 0.36 = 36%
The researcher concludes that “Level of economic development explains 36 percent of the variation in the level of education.”
A researcher is investigating the relationship between Economic development (x) and level of education (y) in...
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please answer all questions : 6-8
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A researcher is interested in the relationship between oral
contraceptive (OC) use and blood pressure in women. Suppose a
sample of ten 35-to 39 year old nonpregnant, premenopausal OC users
who work in a company and have a mean systolic blood pressure (SBP)
of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are
identified. A sample of 21 nonpregnant, premenopausal, non-OC users
in the same age group are similarly identified who have mean SBP of
127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
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