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If 35 is the upper limit of the classinterval of classsize 10, then the lower limit of the classinterval is :
Class size = Upper limit – lower limit
10 = 35 – lower limit
lower limit = 25
In the assumed mean method, if \(A \) is the assumed mean, than deviation \(d_i \) is :
Mode is :
Mode is most frequent value
The correct formula for finding the mode of a grouped frequency distribution is :
Mode
For finding mean of a data, if we use \(\bar x=a+\left(\dfrac{\sum f_iu_i}{\sum f_i}\right)\times h \), then it is called:
This method is called step deviation method
In the formula \(\bar x=a+\dfrac{\sum f_iu_i}{\sum f_i} \), for finding the mean of a grouped data, \(d_is \) are deviation from :
Deviation from mid points of the classes.
While computing mean of grouped data, we assume that the frequencies are :
frequencies are centred at the class marks of the classes
The measures of central tendency which can’t be found graphically is :
Median can’t be found graphically
The measure of central tendency which takes into account all data items is :
Mode takes into account all data items.
The formula for median of a grouped data is :
Median
In the formula, median \(=l+\left(\dfrac{\dfrac{n}{2}cf}{f}\right)\times h,h \) is:
h is class size
The curve drawn by taking upper limits along xaxis and cummulative frequency along yaxis is :
The curve drawn by taking upper limit along xaxis and cumulative frequency along yaxis is less than ogive.
For ‘more than ogive’ the xaxis represents:
xaxis represents lower limit of class intervals for move than ogive
Ogive is the graph of :
ogive is the graph of lower/upper limits and cumulative frequency.
The curve ‘less than ogive’ is always :
The curve less than ogive is always ascending.
In the figure the value of the median of the data using the graph of less than ogive and more than ogive is :
The value of median is 15.
If mode = 80 and mean = 110, then the median is
The lower limit of the modal class of the following data is :
Mode is 13
lower limit is 20
The mean of the following data is : 45, 35, 20, 30, 15, 25, 40 :
15, 20, 25, 30, 35, 40, 45
Mean is 30
The mean and median of a data are 14 and 15 respectively. The value of mode is :
Mode = 3 median – 2 mean
For a given data with 50 observations the ‘less than ogive’ and the ‘more then ogive’ intersect at (15.5, 20). The median of the data is :
Median is 15.5
The empirical relationship among the Median, Mode and Mean of a data is :
Mode = 3 median – 2 mean
For a symmetrical distribution, which is correct?
Mean > Mode > Median
Which of the following is not a measure of central tendency ?
large is not a measure of central tendency
The class mark of a class interval is :
Class mark
If mode of a data is 45, mean is 27, then median is:
Mode = 3 median – 2 mean
45 = 3 median –
median
For the following distribution : The modal class is :
Mode is 80
modal class = 5060
For a given data with 60 observations the ‘less than ogive’ and ‘more than ogive’ intersect at (66.5, 30).The median of the data is :
Median is 66.5
The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its :
Median
A data has 25 observations (arranged in descending order). Which observation represents the median ?
13th observation represents the median
If mode of the following data is 7, then value of k in 2, 4, 6, 7, 5, 6, 10, 6, 7, 2k + 1, 9, 7, 13 is :
The mean and Amedian of a data are 14 and 16 respectively. The value of mode is :
Mode = 3 median – 2 mean
The upper limit of the median class of the following distribution is :
Median is 12 – 17
Upper limit = 17