Data Spread — Learn free

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Questions 1–10 of 10

1. What is the mean of the set 10, 10, 20, 40 and 70?
Question 1A. 20B. 25C. 28D. 30E. 35
2. What is the median of the set 10, 10, 20, 40 and 70?
Question 2A. 10B. 20C. 30D. 40E. 70
3. What does Data Spread describe?
Question 3A. How variable or spread out the data values are, also called a measure of dispersion from the mean or medianB. The difference between the largest and smallest table in a databaseC. The number of columns in a datasetD. The rate at which data grows each yearE. The distance between data centres
4. In the customer-age example with ages from 10 to 60, what are the mean and median?
Question 4A. Mean 30 and median 32B. Mean 20 and median 30C. Mean 35 and median 35D. Mean 40 and median 30E. Mean 32 and median 30
5. In the customer-age example, how is Data Spread expressed in the case of the mean?
Question 5A. 10 to 60B. 30 to 20 and 30 to 60C. 32 to 20 and 32 to 60D. 20 to 60E. 32 to 10 and 32 to 40
6. In the customer-age example, how many customers are aged 20?
Question 6A. 8B. 12C. 15D. 7E. 3
7. How does customer age spread affect content on social media?
Question 7A. The more the age is spread, the more types of content must be madeB. A wider age spread means less content is neededC. Age spread only affects advertising pricesD. Content is unaffected by age spreadE. A wider spread means content must be shorter
8. How does a larger Data Spread affect a marketing department's campaigns?
Question 8A. It reduces the number of campaigns that can runB. It makes campaigns impossible to measureC. It has no effect on campaignsD. It restricts campaigns to a single channelE. The greater the spread, the greater the range of campaigns that can be launched and the more customers engaged
9. Which rule about age groups is given in the social media example of Data Spread?
Question 9A. All content must be suitable for every ageB. Customers over 60 should receive no contentC. Content should target only the median ageD. Kids under age 16 should not view content created for older age groupsE. Content should be made only for the largest age group
10. How is the median of a dataset found?
Question 10A. By adding all values and dividing by the countB. By ordering the set from lowest to highest and taking the exact middle valueC. By taking the most frequent valueD. By subtracting the smallest value from the largestE. By averaging the smallest and largest values