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Statistics Test Mode Calculation

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Questions and Answers

What is the formula to calculate the mean of a set of data?

Sum of all values divided by the number of values (correct)

Mode of the data set

Standard deviation of the data set

Median of the data set

If the grades of a student in 5 subjects are: 78, 88, 89, 90, and 95, what is the mean grade?

86 (correct)

88.4

95.6

What does the median of a set of data represent?

The average value of the data set

The most frequent value in the data set

The highest value in the data set

The middle value of the data set when arranged in order (correct)

In statistics, what does 'mode' refer to?

The most frequently occurring value in a data set Signup and view all the answers

What does standard deviation measure in a data set?

The dispersion or variability of data points from the mean Signup and view all the answers

According to the empirical rule, what percentage of data falls within one standard deviation from the mean?

~68% Signup and view all the answers

What is the mean score of the students in Example 1?

77.99 Signup and view all the answers

How can you calculate the median from a grouped data set?

Use the formula: Md = LMd + [(N/2 - CF)/f] * w Signup and view all the answers

What does the standard deviation measure?

The average distance of each data point from the mean Signup and view all the answers

Which formula can be used to find the mode in statistics?

Mode = The most frequent value in the data set Signup and view all the answers

What does the empirical rule state about normal distributions?

68% of data points fall within 1 standard deviation of the mean Signup and view all the answers

What is the mode of the scores in the Statistics Test?

20 Signup and view all the answers

How would you describe the distribution of the scores in the Statistics Test?

Bimodal Signup and view all the answers

What is the mean age of the patients at Hospital X?

30.25 years old Signup and view all the answers

What method was used to find the mean age of the patients at Hospital X?

Summation of (Frequency * Class Mark) Signup and view all the answers

Which value represents the class mark for the age group 24-32 at Hospital X?

27.5 Signup and view all the answers

In the Math 200 Exam, what calculation involves multiplying frequency with its respective class mark?

Determining Mean Signup and view all the answers