## Find the missing integer in an array if mean is given

Given an array of size N-1 and the mean of N elements (one element is not given). We need to find the missing value X… Read More »

Given an array of size N-1 and the mean of N elements (one element is not given). We need to find the missing value X… Read More »

Given a class interval and frequency of the class and the task is to find standard deviation of grouped data. Formula to find standard deviation… Read More »

Standard error of mean (SEM) is used to estimate the sample mean dispersion from the population mean. The standard error along with sample mean is… Read More »

The t test (also called Student’s T Test) compares two averages (means) and tells if they are different from each other. The t-test also tells… Read More »

Given a class interval and frequency distribution and the task is to find Arithmetic mean. In case of frequency distribution the raw data is arranged… Read More »

Given a two set of random variable, find Covariance. Covariance is a measure of how much two random variables vary together. It’s similar to variance,… Read More »

Given an array of size n, find mean absolute deviation. Prerequisite : Mean, Variance and Standard Deviation Examples: Input : arr[] = {10, 15, 15,… Read More »

Simple Moving Average is the average obtained from the data for some t period of time . In normal mean, it’s value get changed with… Read More »

Given data in array. Find skewness of the data distribution. Skewness is a measure of the asymmetry of a data distribution. Skewness is asymmetry in… Read More »

Given an array of size n and the task is to find Coefficient of variation . Coefficient of variation is the ratio of standard deviation… Read More »

Given an n sized unsorted array, find median and mode using counting sort technique. Thia can be useful when array elements are in limited range.… Read More »

Prerequisite : Correlation Coefficinet Given two arrays X[] and Y[]. Find Spearman’s Rank Correlation. In Spearman rank correlation instead of working with the data values… Read More »

Given an array of N integers with duplicates allowed. All elements are ranked from 1 to N if they are distinct. If there are say… Read More »

Given two investment options A and B, we have tho find the less risky investment of the two. The two investments A and B are… Read More »

You are given an array of n-elements you have to find the mean of the array as mean of all consecutive m-elements of array for… Read More »