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The following are the marks of 9 students in a class. Find the median marks : 21, 24, 27, 30, 32, 34, 35, 38, 48.
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Median is middle number is 32
Find the median of the daily wages of ten workers from the following data : 8, 9, 11, 14, 15, 17, 18, 20, 22, 25.
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Median
Find the mode of the given data : 120, 110, 130, 110, 120, 140, 130, 120, 140, 120.
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120 occur most of the times. So mode is 120
Find the mode of the following data : 25, 16, 19, 48, 19, 20, 34, 15, 19, 20, 21, 24, 19, 16, 22, 16, 18, 20, 16, 19.
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19 has the maximum frequency of 5.50 so mode = 19
Find the value of x, if the mode of the following data is 25. 15, 20, 25, 18, 14, 15, 25, 15, 18, 16, 20, 25, 20, x, 18.
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Mode is 25. It is only possible when . So
Calculate the mean for the following distribution
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Find the mode of the following data : 15, 8, 26, 24, 15, 18, 20, 15, 24, 19, 15.
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15 occur most of the times so mode is 15
Is it correct to say that an ogive is a graphical representation of a frequency distribution ? Give reason.
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Graphical representation of a frequency distribution may not be an ogive. It may be a histogram. An ogive is a graphical represent of cumulative frequency distribution.
Is it true to say that mean, median and mode of a grouped data will always be different. Justify your answer.
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The value of the three measures can be the ssame. It depends on the type of data.
Will the median class and modal class of a grouped data always be different ? Justify your answer.
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Not always, it depends on the given data.
A student draws a cumulative frequency curve for the marks obtained by 40 students of a class as shown. Find the median marks obtained by the students of the class.
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Median of marks = 50
The mean of ungrouped data and the mean calculated when the same data is grouped are always the same. Do you agree with the statement ? Give reason.
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The statement is not true because when we calculate mean of a grouped data is is assumed that frequency of each class is centred at the mid point of the class.
What is the lower limit of the modal class of the following frequency distribution ?
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Mode is 27, modal class is 4050 lower limit is 40.
Find the sum of the deviations of the variate values 3, 4, 6, 7, 8, 14 from their mean.
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Mean
If the mean of the following distribution is 6, find the value of p :
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If \(\bar x \) is the mean of ten natual numbers \(x_1,x_2,â€¦.x_{10}, \) show that: \( (x_1\bar x)+(x_2\bar x)+(x_3\bar x)+â€¦.+(x_{10}\bar x)=0\).
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â€¦(1)
For a particular year, the following is the distribution of the ages (in yrs.) of primary school teachers in a state: Find how many teachers are of age less than 31 years.
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No. of teachers less than 31 years
If \(\sum f_i=11,\sum f_i\ x_i=2p+50 \) and the mean of the distribution is 6, find the value of p.
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A class teacher has the following absentee record of 40 students of a class for the whole term. Find the mean number of days a student was absent.
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Mean
The table given below shows the frequency distribution of the scores obtained by 200 candidates in an MBA examination.
Draw a cumulative frequency curve by using less than series.
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The shirt sizes worn by a group of 200 persons, who bought the shirt from a store are as follows. Find the modal shirt size worn by the group.
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Modal shirt size = 40 as it occurs maximum number of times.
Find the median wage of a worker engaged at a construction site whose data are given below :
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Total number of workers = 100
Median wage
4100 is the median
Find the median for the following data :
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Total number of students = 50
Median
term is in between 15 and 27 so median = 12
Find f and F.
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F=60(5+15+8+2)=30
F = 5 + 15 = 20
Convert the following data into more than type distribution.
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Find the mean of the following data.
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Find the modal class and the median class for the following distribution.
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Modal class is 20 – 30
Median
Median class = 20 – 30
Find the Omodal class and the median class for the following distribution :
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Modal class is 145 – 150
Medain
Median class is 145 – 150
The mean of the following data is 7.5. Find the value of P.
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Find the mode of the given data :
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Modal class
Mode
The median class of a frequency distribution is 125â€“145. The frequency and cumulative frequency of the class preceding to the median class are 20 and 22 respectively. Find the sum of the frequencies, if the median is 137.
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Median =137
Class size = (h) = 145 – 125= 20
l = 125
Median
A survey conducted on 20 households in a locality by a group of students resulted in the following frequency table for the number of family members in a household. Find the mode for the data above :
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Modal class
Mode
Find the mode of given distribution :
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Modal class
Mode
Write the frequency distribution table for the following data :
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The marks obtained by 60 students, out of 50 in a Mathematics examination, are given below : Write the above distribution as â€˜less than type cumulative frequency distribution.â€™
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Find the mode of the given data :
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Modal class is
Mode
Find the median of the following given data :
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Cumulative frequency
Median is
Write the frequency distribution table for the following data :
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Construct the frequency distribution table for the given data :
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Find the mode of the given data :
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Modal class
Mode
Find the mean of the following frequency distribution :
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The wickets taken by a bowler in 10 cricket matches are as follows : 2 6 4 5 0 2 1 3 2 3
Find the mode of the data.
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2 occur most of the times. So mode is 2
Find the median for the following frequency distribution :
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Median class
Median