# Here is the solution for the Quiz of a online course Basic Statistics offered by the Coursera website. This quiz is first week quiz and solution is given below get 100% result all are right answers.

# Exploring Data

# 11 questions

**Q #1**A researcher wants to measure physical height in as much detail as possible. Which level of measurement does s/he employ?

Answer

**Ratio level****Q #2**You conduct a study on eye color and you question 550 people. 110 of them have brown eyes and 44% of them have blue eyes. What percentage of the people you questioned has blue or brown eyes?

*[Your answer should consist of just the number, no additional characters - so if you think the answer is 41% enter the number 41]*

Answer

**64****Q #3**In which situation is a bar graph preferred over a pie chart?

Answer

**When the number of categories in the data is high.****Q #4**Ten students completed an exam. Their scores were: 5, 7, 2, 1, 3, 4, 8, 8, 6, 6. What is the interquartile range (IQR)?

Answer

**4****Q#5**A researcher wants to know what people in Amsterdam think of football. He asks ten people to rate their attitude towards football on a scale from 0 (don't like football at all) to 10 (like football a lot). The ratings are as follows: 1, 10, 6, 9, 2, 5, 6, 6, 5, 10. What is the standard deviation?

Answer

**3,1****Q#6**You find a z-score of -1.99. Which statement(s) is/are true?

- Answer
**The score falls below the mean score.** **The score lies almost two standard deviations from the mean.**

**Q#7**Which of the following statements is true?

- Answer
**Both statements are false.**

**Q#8**The grades for a statistics exam are as follows: 3, 5, 5, 6, 7.5, 6, 5, 1, 10, 4. Which score is an outlier? (Use the interquartile range (IQR).)

Answer

**10****Q#9**How many goals have the top strikers of the Dutch

*Eredivisie*football competition scored? We look at 10 strikers and obtained the following information: 12, 10, 11, 12, 11, 14, 15, 18, 21, 11. The (1) ... of the dataset equals 12, the mean equals (2) ... and the (3) ... equals 11. The standard deviation equals (4) ... Fill in the right words/numbers on the dots.

Answer

**(1) Median, (2) 13.5, (3) Mode, (4) 3.57****Q#10**What is true about a variance of zero? (Multiple answers possible.)

**There is no variability in the scores: everybody has the same score.****The standard deviation equals zero as well.**

**Q#11**What is the difference between variables and constants?

**Variables vary across cases, constants do not vary.**

## No comments:

## Post a Comment