17. which of the following is skewed right? 18. fifty percent of the observations will be at or above the…
17. which of the following is skewed right? 18. fifty percent of the observations will be at or above the (a) median/center (b) mean (c) maximum (d) minimum (e) mode 19. which of the following graphs has the smallest standard deviation?
Answer
Explanation:
Step1: Recall right - skewed distribution
In a right - skewed distribution, the tail is on the right side. Graph A has a long tail on the right side.
Step2: Recall median property
The median is the middle value of a data - set. By definition, 50% of the observations are at or above the median and 50% are at or below.
Step3: Recall standard deviation concept
Standard deviation measures the spread of data. Graph B has most of the data concentrated around two values, indicating less spread compared to A and C.
Answer:
- A
- a
- B