Measures of Central Tendency - Online Test
Q1. The mean is
Answer : Option B
Explaination / Solution:
The sum of the values of all observations divided by the number of observations. Mean = ∑X / N
Q2. Below mention formula is used for calculating
Answer : Option D
Explaination / Solution:
In case of continuous series the median can locate the median class where N/2th item [not (N+1)/2th item] lies. The median can then be obtained as given formula.
Q3. There are three Quartiles
Answer : Option D
Explaination / Solution:
Quartiles are the measures which divide the data into four equal parts, each portion contains equal number of observations. Thus, there are three quartiles, Q1,Q2and Q3.
Q4. There are two methods of finding mode in discrete series
Answer : Option C
Explaination / Solution:
The value of mode can be determined by the both methods of inspection method & grouping method in discrete series.
Q5. Relationship between mode is
Answer : Option D
Explaination / Solution:
In a normal distribution in which the values of mean, median and mode coincide, (i.e. mean = median = mode) is known as asymmetrical distribution. Mode=3 Median-2 Mean
Q6. Percentiles divide the series into
Answer : Option D
Explaination / Solution:
Percentiles divide the distribution into hundred equal parts, so you can get 99 dividing positions denoted by P1, P2, P3, ..., P99.
Q7. In case of symmetrical distribution, mean median and mode are
Answer : Option B
Explaination / Solution:
A symmetric distribution is a type of distribution where the left side of the distribution mirrors the right side. In a symmetric distribution, the mean, mode and median all fall at the same point.
Q8. When the distribution is negatively skewed
Answer : Option A
Explaination / Solution:
A distribution is negatively skewed the mean is usually lesser than the median and Median is lesser than Mode.
Q9. Following are the partition values except
Answer : Option C
Explaination / Solution:
The mode of a set of data is the value in the set that occurs most often.
Q10. Which partition value divides the total set of values into four equal Parts
Answer : Option C
Explaination / Solution:
Quartiles are the measures which divide the data into four equal parts, each portion contains equal number of observations.
