Question

find the mode and medain for the following data 10,10,10,10,10,15,15,15,15,15,15,20,20,20,20,25,30
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Answer 1

Answer:

bhai mujhe smjh ni aara

Step-by-step explanation:

tu questions ki pic de

Answer 2

Answer:

hiii

Step-by-step explanation:

Hint:

• First of all we need to find the modal class which is that interval whose frequency is maximum and the mode is given by the formula

mode=l+(f−f12f−f1−f2)h

• Here l is the lower limit of the modal class and f is the frequency of the modal class and f1 is the preceding frequency of the modal class interval and similarly the succeeding one is f2 and h is the class size.

• So here we are given that which class interval represents the marks earned by the number of students which is termed as the frequency and we need to calculate the mode. So basically mode is the value which appears the maximum time in the set of the observations. For example: if we have the set of the observations like 1,1,2,3,4,4,4,4 so here 4 appears most of the time so it will be the mode of the given set of the observations.

Similarly we are given the set of the observations like

( SEE IN THE PICTURE)

• So here number of maximum items is 30 and this belongs to the class interval 25−30
• So here we can say that mode lies in the interval 25−30
• mode=l+(f−f12f−f1−f2)h
• Here l is the lower limit of the modal class which is l=25 and f is the frequency of the modal class which is 30 and f1 is the preceding frequency of the modal class interval which is 18and similarly the succeeding one is f2which is 20 and h is the class size which is h=5
• mode=l+(f−f12f−f1−f2)h
• mode=25+(30−1860−18−20)5=27.73

• So here the mode is 27.73
• Note:
• Means are the averages of the given data, median is the central value of the data set and mode is the number which has appeared most of the time in the data set. So these three terms are related by the formula:
• mode=3median−2mean
• If any two of the above values are given then we can find the third value easily by using this formula.

HOPE IT HELPS❣️