The answer is X=5
Explanation:
Answer:
2 minutes
Step-by-step explanation:
Because it takes 30 seconds to get from 20th floor to 15th floor which is 5 floors, which means that it takes 30 seconds for 5 floors. 5 times 4= 20
which makes 20 floors, 4 times 30 seconds= 120 seconds or 2 minutes.
Answer:
6/21
Step-by-step explanation:
6/21 can be divided by 3 to equal 2/7
Answer:
20 oz
Step-by-step explanation:
16 oz is 1 pound
16 divided by 4 is 4
16 + 4 = 20 oz.
What measure of spread is used when your data distribution is symmetrical?
Answer: When the data distribution is symmetrical, the appropriate measure of spread is standard deviation. The reason is both sides of symmetrical distribution will have same spread.
Symmetrical distribution: Symmetrical distribution is one when both sides of the distribution are identical. The symmetrical distribution is bell shaped and mean, median and mode are equal in symmetrical distribution.
Standard deviation: Standard deviation is the measure of dispersion. It measures the deviation of a set of numbers from its mean. It is defined as the square root of means of the squared deviations from the arithmetic mean