Statistics Quiz

Which of the following states that the sampling distribution of the sample means approaches a normal distribution as the sample size gets larger?

• Limit Theorem

• Bayes Theorem

• Law of Large Numbers

• Central Limit Theorem

What is suggested in the histogram of the sampling distribution below?

• curve

• normality

• skewed to the left

• skewed to the right

Formulate the mathematical representation of the problem. In general, the mean height of woman is 65” with standard deviation of 10”. Make a mathematical representation in finding a random sample of 25 women with mean height of 70”. Formulate the mathematical representation of the problem.

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In general, the mean height of woman is 65” with standard deviation of 10”. What is the z-score of a random sample of 25 women with a mean height of 70”?

• 5

• 0.2

• 1.81

• 2.5

How many possible outcomes when a die is tossed thrice?

• 6

• 18

• 36

• 216

T- Distribution is a probability distribution used to estimate parameters except when:

• the sample size is small

• the population variance is unknown

• the population standard deviation is known

• the sample size is small and population variance is unknown

What is the degrees of freedom of the sample size 12?

• 14

• 13

• 12

• 11

Which of the following is the value of t0.05 with a sample size of 10?

• 1.812

• 1.833

• 1.860

• 1.900

It is one of the measurements in statistics that express how a percentage of values falls below a particular set of data scores.

• z-distribution

• percentile

• scores

• t-distribution

What is the sample size when the degrees of freedom is 25?

• 23

• 24

• 25

• 26