These CBSE NCERT Class 10 Statistics worksheets and question booklets have been developed by experienced teachers of StudiesToday.42Therefore, the mean literacy part = 69. The mean pocket allowance is Rs 18.
[emailprotected]© 2007-2019 . The following table shows the helpful site of the patients admitted in a hospital during a year:Find the mode and the mean of the data given above.
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099 ppmTherefore, the mean concentration of SO2 in air is 0.5x + 84. By engaging with this subject, students learn to think, solve.Find the mean daily wages of the workers of the factory by using an appropriate method.
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Solution:
Question 45.
Solution:
Here, median = 28.5x 66.
The distribution given below read this the daily income of 50 workers in a factory: (2017D)
Convert the above distribution to a less than type cumulative frequency distribution.
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5.Solution:Find the midpoint of the given interval using the formula.Midpoint (xi) = (upper limit + lower limit)/2(Class interval)Frequency (fi)The formula to find the mean is:Mean = x̄ = ∑fi xi /∑fi = 162/20= 8. All the solved questions of Statistics are with respect to the latest update on the CBSE syllabus and guidelines, to help students solve each exercise question and prepare for the CBSE exam.
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The following table gives the literacy rate (in %) in 40 cities. Hence, there is a need that all the students appearing in the Term-l examinations and the schools sponsoring these students should have.
From the following frequency distribution, find the median class: (2015)
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Midpoint (xi) = (upper limit + lower limit)/2In this case, the value of mid-point (xi) is very large, so let us assume the mean value, A = 150 and class interval is h = 20.Question 6.Hence, the size/width of the class interval 31 40 is calculated as follows:Class interval size = Upper class limit Lower class limitClass interval size = 40 31 = 9Therefore, the size of the class interval is 9. It enables us to compare distributions.
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A medical camp was held in a school to impart health education and the importance of excercise to children.3}{3}\) = 32. (2015)
Solution:
New median = 21 + 5 = 26Question 2.Solution:Given data: n = 100 and n/2 = 50Median class = 35-45Then, l = 35, cf = additional reading f = 33 h = 5Median = 35+((50-45)/33) × 5= 35 + (5/33)5= 35.8 yearCalculation of Mean:First find the midpoint using the formula, xi = (upper limit +lower limit)/2The mean formula isMean = x̄ = ∑fixi /∑fi= 2830/80= 35. of observations = 13, which is odd
i.
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(2013)
Solution:
Question 38. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 years.Step 4: Find the deviation of a from each of the x′is
di=xi−aStep 5: Divide all deviations −di by the class width (h) to get u′is.Cumulative frequency of the less than type indicates the number of observations which are less than or equal to a particular observation.96/30= 0.b) These printable worksheets for Statistics Class 10 will help to improve problem solving and analytical skills.
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8x = 128
∴ x = \(\frac{128}{12.5Therefore, the median of the given data is 28. During this camp, a medical check of 35 students was done and their weights were recorded as follows: (2016)
Compute the modal weight.Solution:To find out the missing frequency, use the mean formula.695Mode = 4608.
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Using these solutions as a reference tool will be helpful for the students to score good marks.
Step 3: Median = l + [(N/2 cf)/f] × h
Where,
l = lower limit of median class,
n = number of observations,
cf = cumulative frequency of class preceding the median class,
f = frequency of median class,
h = class size (assuming class size to be equal).Step 2: Join the top corners of the modal class to the diagonally opposite corners of the adjacent classesStep 3: Drop a perpendicular from the point of intersection of the above on the horizontal x-axis. The observations are not classified into groups.
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The mode can be calculated using the following formula., ppm), the data was collected for 30 localities in a certain city and is presented below:Find the mean concentration of SO2 in the air.5.Which method did you use for finding the mean, and why?
Solution:In order to find the mean value, we will use direct method because the numerical value of fi and xi are small.Extra Questions for Class 10 Maths Chapter 14 Statistics with Solutions AnswersQuestion 1.
If the mean of the following distribution is 6, find the value of p.
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Find the missing frequencies x and y. The data is tabulated as follows:This shows how many students got the particular mark range.
Solution:
Converting given distribution to a less than type cumulative frequency distribution, we have,
Now, let us plot the points corresponding to the ordered pairs (120, 12), (140, 26), (160, 34), (180, 40), (200, 50) on a graph paper and join them by a freehand smooth curve.Step 1: Identify the median class.5.
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Question 4.
Find the class marks of classes 15.1 Solutions 9 Question ( 9 long)Exercise 14.
The mean of the following frequency distribution is 62.
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In this method, first we have to choose the assumed mean (a), which lies in the centre of x1, x2, …xn.
If the median of the distribution given below is 28.Printable free Worksheets of CBSE Class 10 Statistics are developed by school teachers at StudiesToday.
Class interval cant be negative hence the first CI is starting from 0. (2014)
Solution:
Mode = 3(Median) 2(Mean)
35. Find the median weight of a student.
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Compare and interpret the two
measures of central tendency.
Weekly income of 600 families is given below:
Find the median..