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Yogita Ingle 5 years, 4 months ago
Mean or average or arithmetic mean is one of the representative values of data. We can find the mean of observations by dividing the sum of all the observations by the total number of observations.
Mean of raw data:
If x1, x2, x3, ……. xn are n observations, then
Arithmetic Mean = (x1, x2, x3, ……. xn)/n
= (∑xi)/n
1. Weights of 6 boys in a group are 63, 57, 39, 41, 45, 45. Find the mean weight.
Solution:
Number of observations = 6
Sum of all the observations = 63 + 57 + 39 + 41 + 45 + 45 = 290
Therefore, arithmetic mean = 290/6 = 48.3
Posted by Shreya Pandilwar 5 years, 4 months ago
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Veera Patel 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Caterpillars are cold blooded organisms. If we touch them with bare hands, the heat transferred to their body can be fatal for them. Also, caterpillars have thick stingy hair , which causes irritation to the are in contact, in some cases these hairs can be poisonous too. Sometimes, the body fluid of some caterpillars too is poisonous .
Posted by Paramita Mitra 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Caterpillars are larval forms of insects such as butterfly. Caterpillars shed their skin 3-5 times while they grow and this process is called molting. Their skin never grows as skin of human does, so while growing they have to crawl out of their skin when their skin becomes too tight. After first molting they bring new skin cover and in the mean time some caterpillars also eat their shed old skin. After they grow more, then again shed their skin.
In case of humans, shedding of whole skin does not occur as when human body grows, skin cells also grow. Shedding of only dead skin cells occur in case of human beings.
Posted by Jaya G 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Total number of students = 40
Find the number of students that like to study English:
Number of students = 1/5 x 40 = 8
Find the number of students that like to study Math:
Number of students = 2/5 x 40 = 16
Find the number of students that like to study Science:
Number of students = 40 - 8 - 16 = 16
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Kamalika Samadder 5 years, 4 months ago
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Varshini Nachinarkkiniyan 5 years, 4 months ago
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Meghna Thapar 5 years, 4 months ago
Akbar's Rajput policy was important to understand because it consolidated the Mughal empire and provided a solid foundation. Akbar gave high mansabs to Raja Bharmal, his son, Bhagwan Das and his grandson, Man Singh. After the fall of the fort of Chittor some Rajput states like Bikaner and Jaisalmer voluntarily accepted the suzerainty of Akbar while some of them entered into matrimonial alliances with him.
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Vishakha ??? . 5 years, 4 months ago
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Ambika 6622 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty. We can predict only the chance of an event to occur i.e. how likely they are to happen, using it. Probability can range in between 0 to 1, where 0 means the event to be an impossible one and 1 indicates a certain event. Probability for class 10 is an important topic for the students which explains all the basic concepts of this topic. The probability of all the events in a sample space sums up to 1.
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