Model 2X2 Analysis Degrees of Values Freedom o 004 o 02 006

Model 2-X2 Analysis Degrees of Values Freedom o 004 o 02 0.06 o 15 o 46 1.07 1.64 2.71 3.84 6.64 10.83 0.10 o.21 o 45 o 71 1.39 2.41 3.22 4.60 5.99 9.21 13.82 1.42 2.37 3.66 4.64 6.25 7.82 11.34 16.27 0.71 1.06 1.65 2.20 3.36 4.88 5.99 778 9.49 13.28 1847 1.14 1.61 2.34 3.00 4.35 6.06 7.29 9.24 11.07 15.09 20.52 o 95 o 9 o 8 0.7 0.5 0.3 o.2 o.1 o.o5 o 01 0.001 P Value Significant probability Not Significant 14. The table in Model 2 has three types ofvalues+degrees of freedom, and P values or probabilities. a. Which of these are along the bottom of the table? P value Which of these are along the side of the table? Degree c What chi-square is needed to have a P value of 0.5 in an experiment with two degrees of value freedom? 15. The table in Model 2 is a reference table used by scientists to interpret the calculated chi-square value for their experiment. It converts the chi-square value into a probability that the differences in the data are only due chance. a. Which P lues in table that the difference between the expected and observed the indicate data was likely due to chance? Which P Values in the table indicate that the difference between the expected and observed data was likely due to an environmental factor? 16. What does a P value of 0.7 mean in terms of petoent chance that the data sets are different only by chance an oum POGIL\' Activities for AP. Biolo

Solution

Question 14

a.= p values/probabilities

b.=degree of freedom

c= 1.39

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Question 15

A=0.95 through 0.1

B=0.05 through 0.001

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Question 16

Answer =

There is 70% chance variation is due to random events

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Question 17

Answer = significant

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Question 18

Answer = a larger chi square value

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Question 19

Answer = degree of freedom =1

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Question 20

Answer

a =coin A = X^2 =1.28       20 -30% chance due to random variation ---NOT SIGNIFICNAT DIFFERNECE

B =coin B = X^2 = 8           0.1 - 1% chance due to random variation ---STATISTICALLY SIGNIFICNAT DIFFERNECE

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Question 21

Answer

A ) ANSWER   = COIN A   : X^2 RESULT IS > 0.05

B) ANSWER   = COIN B   : X^2 RESULT IS < 0.05

C ) ANSWER   = COIN NOT FLIPPED CORRETCLY : I SIDE SIGNIFICANTLY HEAVIER

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Question 22

Answer

NO , THE X^2 VALUE FALLS BELOE

THE 0.05 PROBABILITY VALUE INDICATING THE DEVIATION FROM EXPETCED IS NOT SIGNIFICANT