
Chi Square
Authored by Logan Minning
Biology
12th Grade
NGSS covered
Used 17+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find degrees of freedom?
Tags
NGSS.HS-LS4-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of a Chi-Square test?
To determine if there is a significant difference between the observed and expected values in an experiment.
To determine if there is a statistically significant difference between the observed and expected values in an experiment.
To do extra math.
To conclusively prove that your null hypothesis is true or false.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the degrees of freedom.
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Gregor Mendel was experimenting with peas and exploring the basics of genetics. He knew that green (G) is dominant over yellow (g) peas. In one experiment, he crossed a heterozygous green pea with a homozygous yellow pea. In the F1 generation he obtained a total of 400 peas out of which 180 were green and 220 were yellow.
a. Calculate the chi-square to the nearest tenth.
c. Explain if the null hypothesis can be kept or rejected.
x2 = 4; Null hypothesis can be rejected because chi-square is greater than the critical value of 3.84.
x2 = 4.5; Null hypothesis can be kept because chi-square is less than the critical value of 5.99
x2 = 2; Null hypothesis can be rejected because chi-square is less than the critical value of 5.99
x2 = 4; Null hypothesis can be kept because chi-square is greater than the critical value of 3.84
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If the χ2 critical value = 5.99 and the
χ2 calculated value = 7.35, what is the conclusion
Reject Ho
Do not reject Ho
there is not enough info to decide
The conclusion can only be made if we also know the p-value
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the null hypothesis?
Injury type is independent of position played
Injury type is dependent on the position played independent
Injury type is correlated to position played.
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
This symbol denotes the null hypothesis
Null hypothesis
Alternative Hypothesis
H0
Ha
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