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If the mean of a group of observations is 50, and later it's discovered that an observation of 60 was misread as 40, what will happen to the mean after correction?
The median of 11, 12, 14, 18, x, 22, 25, 28 (arranged in ascending order) is 20. Find x.
What is the relationship between the three quartiles and the median?
If the frequencies of classes 0-10, 10-20, 20-30 are 5, 8, 7, what is the 'more-than' cumulative frequency for class 10?
The width of each bar in a bar chart depends on:
For a data set with N=15, what is the position of the median?
Which of the following is the most suitable diagram to represent the percentage composition of gases in the atmosphere?
In a frequency table, if the sum of f*x is 240 and the sum of f is 12, what is the mean?
If the mode of a distribution is 15 and the mean is 15, what is the median?
Calculate the range of the following: -5, -2, 0, 5, 10.
In a pie chart, if the 'Food' sector is 144 degrees, what percentage of total expenditure is spent on food?
Which of the following is true for the values of a dataset: 2, 2, 2, 2, 2?
What is the lower limit of the median class for the following: (0-10, f=2), (10-20, f=5), (20-30, f=3)?
If the sum of squares of deviations from the mean is zero, then:
A set of data consists of 10 items with mean 12. If another 10 items with mean 18 are added, what is the new mean?
In a histogram, the width of the bars represents:
The mean of five numbers is 20. If one number is excluded, the mean becomes 15. What is the excluded number?
In a bar chart, if the total frequency is doubled while keeping proportions same, the height of the bars will:
What is the median for the first 100 natural numbers?