chi square test objective type questions and answers
Questions
Free download in PDF Chi Square Test Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS and the exams of Botany. These short solved questions or quizzes are provided by Gkseries.
21
A television enthusiast would like to know if the set of network television shows that were nominated for an Emmy were equally likely to have come from ABC, CBS, NBC, and FOX. What test asks whether the number of nominations from each network are consistent with a population distribution in which ¼ of the nominations were from each network.
Answer: Hypothetical counts that would occur if the null hypothesis were true
26
A chi-square test of the relationship between personal perception of emotional health and
marital status led to rejection of the null hypothesis, indicating that there is a relationship
between these two variables. One conclusion that can be drawn is:
A
Marriage leads to better emotional health
B
Better emotional health leads to marriage
C
The more emotionally healthy someone is, the more likely they are to be married
D
There are likely to be confounding variables related to both emotional health and
marital status
29
The newspaper also reported that "The number of children in the study who contracted
asthma was relatively small, 265 of 3,535." Which of the following is represented by
265/3535 = .075?
A
The overall risk of getting asthma for the children in this study
B
The baseline risk of getting asthma for the “non-athletic peers” in the study
C
The risk of getting asthma for children in the study who participated in sports
D
The relative risk of getting asthma for children who routinely participate in vigorous
after-school sports on smoggy days and their non-athletic peers
31
Of the following, which is the most important additional information that would be useful
before making a decision about participation in school sports?
A
Where was the study conducted?
B
How many students in the study participated in after-school sports?
33
Past data has shown that the regression line relating the final exam score and the midterm
exam score for students who take statistics from a certain professor is:
final exam = 50 + 0.5 × midterm
One interpretation of the slope is
A
a student who scored 0 on the midterm would be predicted to score 50 on the final exam
B
a student who scored 0 on the final exam would be predicted to score 50 on the midterm
exam
C
a student who scored 10 points higher than another student on the midterm would be
predicted to score 5 points higher than the other student on the final exam
D
students only receive half as much credit (.5) for a correct answer on the final exam
compared to a correct answer on the midterm exam
Answer: a student who scored 10 points higher than another student on the midterm would be
predicted to score 5 points higher than the other student on the final exam
34
This is a randomized experiment rather than an observational study because:
A
Blood pressure was measured at the beginning and end of the study
B
The two groups were compared at the end of the study
C
The participants were randomly assigned to either walk or read, rather than choosing
their own activity
Answer: Using a random sample of students at a university to estimate the proportion of people
who think the legal drinking age should be lowered
36
A polling agency conducted a survey of 100 doctors on the question “Are you willing to treat
women patients with the recently approved pill RU-486”? The conservative margin of error
associated with the 95% confidence interval for the percent who say 'yes' is
Answer: to estimate the change in y for a one-unit change in x
40
Pick the choice that best completes the following sentence. If a relationship between two
variables is called statistically significant, it means the investigators think the variables are
A
related in the population represented by the sample
B
not related in the population represented by the sample
