Combined Mean Questions And Answers

Below is a quick tutorial followed by practice questions.

Cool math games hangman. All questions are past exam questions and ive also added the answers. Im never quite sure how to get latex commands to function on quora so i hope this doesnt end up being messy. Work out the age of the teacher.

When thei teacher is included the mean increases to 13 years. Let 2 1 x x are the mean of first and second group of data containing n 1 n 2 items respectively. 7 times 135 m 945 m.

The following equation is used to compute combined mean. Please answer the following questions with working please and tell me how you got the answer. And we have means and std within each group and we wish to have to total mean and std over the 2 groups combined together.

Then combined mean 2 1 2 2 1 1 12 n n x n x n x if there are 3. Mean mode and median are basic statistical tools used to calculate different types of averages. In this question we have been given the mean so we are going to have to calculate the total from the mean.

This is a worksheet of finding the mean from a table for discrete and grouped data. Mean mean is the most common form of average used. Mathoverlinex fracn1 overlinex1 n2 overlinex2 n1 n2math the variables mathn1math and mathn.

This is a worksheet of finding the mean from a table for discrete and grouped data. All questions are past exam questions and ive also added the answers. Session 5 measures of central tendency combined mean combined arithmetic mean can be computed if we know the mean and number of items in each groups of the data.

Example find the mean of 8 5 7. When the extra plank of wood is added the mean length of a plank of. 1 if we have variable x measured in group 1 and in group 2.

To calculate mean you simple add up all the values of data given and divide by the number data provided.