Test scores on a recent statistics test are listed below. 80 79 92 75 88 35...

Test scores on a recent statistics test are listed below.
80 79 92 75 88 35 98 91 90 81 32 50 59 66 68 95 42 18
a) Find the mean and median of the data set.
b) Find the standard deviation and the range
c) Find the five number summary for the data.
d) Construct a box plot for the data.
e) Are there any outliers? Justify your answer.
f) Describe the distribution of the data.
g) Which percentile would be equal to 3Q
?
h) Find the 80 th percentile and interpret your answer.

Expert Solution

orchestra answered 2 years ago

Scores are 92, 68, 88, 96, 72, 88, 80, 64, 74, 92, 100, 84 What is...

Scores are 92, 68, 88, 96, 72, 88, 80, 64, 74, 92, 100, 84 What is the IQR? 19 19.5 20.5 20 6

Listed below are grades for Calculus and Precalculus students. Calculus 95, 87, 55, 88, 79, 80,...

Listed below are grades for Calculus and Precalculus students. Calculus 95, 87, 55, 88, 79, 80, 86, 91, 93, 68, 91, 79, 73, 81, 90, 72, 84 Precalculus 82, 66, 42, 90, 82, 38, 77, 90, 72, 65, 71, 88, 63, 93, 67, 55, 34, 82, 71 find the mean, standard deviation, sample size, claim, Ho, H1, critical value, test statistic and conclusion 3) Test the claim that the majority of Calculus students are passing the class with a C...

Determine the 95% confidence interval for the following scores: 83, 92, 81, 87, 79, 93, 88,...

Determine the 95% confidence interval for the following scores: 83, 92, 81, 87, 79, 93, 88, 87, 83. Hint: You will need to determine the sample mean and standard deviation and then construct your confidence interval around these.

Using the scores of 30 students on a statistics test determine the range. 75 52 80...

Using the scores of 30 students on a statistics test determine the range. 75 52 80 96 65 79 71 87 93 95 69 72 81 61 76 86 79 68 50 92 83 84 77 64 71 87 72 92 57 98

The test scores of Statistics are listed below, find the mean of the data set that...

The test scores of Statistics are listed below, find the mean of the data set that excluding the outliers: 75,48, 83, 55, 70, 78, 50, 52, 53, 40, 54, 60, 48, 65, 53, 47, 33, 53, 28, 50, 48,55 A. 54.35 B. 56.45 C. 61.15 D. 53.15

The test scores of 10 students are listed below. 32, 69, 77, 82, 100, 68, 88,...

The test scores of 10 students are listed below. 32, 69, 77, 82, 100, 68, 88, 95, 75, 80 a. Determine the five-number summary and draw a boxplot for the given data above. Minimum ________ Q1 ________ Median ________ Q3 ________ Maximum b. Is there any outlier? Justify your answer. c. Which of the measures of center would be best to represent the data? Justify your answer

1. Given the following set of grades from a recent statistics exam: 92 88 93 95...

1. Given the following set of grades from a recent statistics exam: 92 88 93 95 94 89 88 78 77 76 77 74 72 68 54 99 94 91 85 84 88 34 56 87 82 a) (5 points) Sketch the histogram of the data. You may either sketch it by hand or give a screenshot of Statkey. b) (6 points) Describe the shape of the data. Describe the modality, symmetry, and any unusual features, e.g., outliers. c) (5 points)...

Using MATLAB A list of 30 test scores is: 31, 70, 92, 5, 47, 88, 73,...

Using MATLAB A list of 30 test scores is: 31, 70, 92, 5, 47, 88, 73, 51, 76, 80, 90, 55, 23, 43, 98, 36, 87, 22, 61, 19, 69, 26, 82, 99, 71, 59, 49, 64 Write a computer program that determines how many grades are between 0 and 19, between 20 and 39, between 40 and 59, between 60 and 79, and between 80 and 100. The results are displayed in the following form: Grades between 0 and...

The scores on a statistics test are Normally distributed with parameters µ = 75 and σ...

The scores on a statistics test are Normally distributed with parameters µ = 75 and σ = 10. Find the probability that a randomly chosen score is (a) no greater than 60 (b) at least 90 (c) between 60 and 90 (d) between 65 and 85 (e) at least 75

93 95 93 81 88 88 84 75 89 81 92 91 83 78 88 77...

93 95 93 81 88 88 84 75 89 81 92 91 83 78 88 77 95 94 90 94 80 84 95 87 92 92 94 84 83 89 84 87 78 99 97 79 93 83 76 92 96 77 52 89 95 76 87 92 80 70 94 90 93 83 88 89 95 87 88 96 92 87 96 93 96 81 93 76 78 96 96 84 89 91 92 87 91 90 86 88...

Question