Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
ISDS 361A Test One with Questions and Answers, Exams of Business Economics
ISDS 361A Test One with Questions and Answers A histogram is bi-modal. Then, ANSWER✓✓ It has two modes A histogram is symmetric. Then, ANSWER✓✓ It has no skewness A histogram of given data shows three clear peaks. Therefore, ANSWER✓✓ There are three modes and there are three distinct groups in the data. A value has a z score of 3. This means that ANSWER✓✓ The value is three standard deviations above the mean. A variable has a Q1 of 25 and a Q3 75. It also has a Q2 of 50. The IQR is ANSWER✓✓ 50 From a random sample of 500 students, students study for an average of 10 hours per week with a standard deviation of 4 hours per week. Say, a student in this sample studies for 12 hours per week. What is the z-score of this student? ANSWER✓✓ 0.5 In a statistics mid-term exam graded out of 100 points, the distribution of the exam scores was bi-modal with a mean of 70 points with a
Typology: Exams
2024/2025
1 / 6
This page cannot be seen from the preview
Don't miss anything!
