Self Online Study - Search Result

JEE-Main - Grade 11 - Mathematics - Linear Inequalities - Importance and Snapshot of Linear Inequalities - Study ref# 617

Introduction: In earlier classes, we have studied equations in one variable and two variables and also solved some statement problems by translating them in the form of equations. Now a natural question arises: ‘Is it always possibl... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Importance and Snapshot of Statistics - Study ref# 644

Introduction We know that statistics deals with data collected for specific purposes. We can make decisions about the data by analyzing and interpreting it. We have studied the methods of finding a representative value for the given data... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Importance and Snapshot of Statistics - Study ref# 645

Following sections must be covered to understand the Statistics: 1. Measure of Dispersion 2. Range 3. Mean Deviation 4. Variance and Standard Deviation 5. Analysis of Frequency Distribution... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Target Setup for Statistics - Study ref# 646

Student requires to achieve the following milestones to get better grip over Statistics. The milestones / targets are as follows:-Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000%Subject T... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5341

Find the mean deviation about mean for the data in following tables. Answer: Mean &nb... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5342

Find the mean deviation about median for the following data:Note: We are to find the mean deviation about the median, so first of all median is to be calculated. It is a continuous data. So median can be calculated by using the formula &nb... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5343

Calculate the mean deviation about median for the age distribution of 100 persons given below. Note: First make the class interval are of uniform length and then use the formula , median . Answer: Here, N= 100 &nb... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5344

Find the mean and variance for the following data. 6,7,10,12,13,4,8,12. Answer: Mean = and variance = ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5345

Find the mean and variance for first n natural numbers. Answer: First n natural numbers are 1,2,3,4……….n. Mean = Variance = = = ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5346

Find the mean and variance for first 10 multiplies of 3. Answer: First 10 multiplies of 3 are 3,6,9,12,15,18,21,24,27,30. Mean ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5347

Find the mean and variance for the following data. Answer: Mean = Variance = ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5348

Find the mean, variance and standard deviation using short-cut method. Answer: Let assumed mean , A = 92.5, h = 5Mean =92.5+ = 92.5+ 0.5 = 93Variance = Standard dev... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5349

The mean and variance of eight observation are 9 and 9.25, respectively. If six of the observations are 6,7,10,12,12 and 13, find the remaining two observations. Answer: Let the remaining two observations are a and b. Given, read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5350

Given is the mean and is variance of n observations . Prove that the mean and variance of the observations are and respectively, Answer: Mean of ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5351

The frequency distribution is given below. where, A is a positive integer has a variance of 160. Determine the value of A. Answer: ... read more

JEE-Main - Grade 11 - Mathematics - Statistics - Study ref# 5352

There are 60 students in a class. The following is the frequency distribution of the marks obtained by the students in a test: where, is a positive integer. Determine the mean and standard deviation of the marks. Answer: First find ... read more