10:21 Question Completion Status: Does Highest degree earned earth LT HIGH HIGH

Question

10:21 Question Completion Status: Does Highest degree earned earth LT HIGH HIGH revolve SCHOOL SCHOOL SE POST- Total sun, or earth? Earth 78 473 986 72 175 313 Total 150 501 1299 2016 General Social Survey Please calculate expected frequencies to one decimal place and chi-square to three decimal places. a) Your chi-square result: b) How many degrees of freedom for this table? c) Critical value for alpha 0.0001? d) So is the relationship between education and knowledge about the earth and sun statistically significant? Yes/no

Explanation / Answer

applying chi square test:

a)

chi square result=82.542

b)

degree of freedom =(row-1)*(column-1)=(2-1)*(3-1)=2

c)

critical value =18.421

d)

Yes

Observed Oi LT High School High School Post secondary Total earth around sun 78 473 435 986 sun around earth 72 175 66 313 Total 150 648 501 1299 Expected Ei=?row*?column/?total LT High School High School Post secondary Total earth around sun 113.857 491.861 380.282 986 sun around earth 36.143 156.139 120.718 313 Total 150 648 501 1299 chi square =(Oi-Ei)2/Ei LT High School High School Post secondary Total earth around sun 11.292 0.723 7.873 19.889 sun around earth 35.573 2.278 24.802 62.653 Total 46.865 3.002 32.676 82.542

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