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BESC 3010 - TEST 2 QUESTIONS AND ANSWERS | LATEST UPDATE | 2024/2025 | GRADED A+ $9.79   Add to cart

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BESC 3010 - TEST 2 QUESTIONS AND ANSWERS | LATEST UPDATE | 2024/2025 | GRADED A+

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BESC 3010 - TEST 2 QUESTIONS AND ANSWERS | LATEST UPDATE | 2024/2025 | GRADED A+ What is the purpose of a confidence interval in statistics? A) To describe the spread of data B) To estimate a population parameter with a certain level of confidence C) To calculate the exact value of the para...

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BESC 3010 - TEST 2 QUESTIONS AND
ANSWERS | LATEST UPDATE |
2024/2025 | GRADED A+
What is the purpose of a confidence interval in statistics?

A) To describe the spread of data

B) To estimate a population parameter with a certain level of confidence

C) To calculate the exact value of the parameter

D) To determine the correlation between two variables


✔✔B) To estimate a population parameter with a certain level of confidence




When using a t-test, which condition must typically be met?

A) The data must be nominal

B) The sample size must be exactly 100

C) The data should approximately follow a normal distribution

D) The data should only include whole numbers


✔✔C) The data should approximately follow a normal distribution




If two variables have a strong negative correlation, what does this imply?


1

,A) As one variable increases, the other also increases

B) As one variable increases, the other decreases

C) There is no relationship between the variables

D) Both variables stay constant


✔✔B) As one variable increases, the other decreases




What does a p-value of 0.03 indicate in hypothesis testing with a significance level of 0.05?

A) The null hypothesis is rejected

B) The null hypothesis is accepted

C) There is no relationship between variables

D) A larger sample is needed


✔✔A) The null hypothesis is rejected




What does a high standard deviation signify about a dataset?

A) Data points are closely clustered around the mean

B) There is more variability in the dataset

C) The dataset has only a few unique values

D) The data points are all identical


2

, ✔✔B) There is more variability in the dataset




When calculating the mean of a dataset, what is being determined?

A) The most frequently occurring value

B) The central tendency of data

C) The minimum value

D) The range of data


✔✔B) The central tendency of data




In a normal distribution, what percentage of data typically falls within one standard deviation of

the mean?

A) 50%

B) 68%

C) 75%

D) 95%


✔✔B) 68%




What is the purpose of a hypothesis test in statistics?


3

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