statistics
posted by Sue .
Can someone please tell me how I miss this, I added them up 29 and divided by 8 and came up with 3.625. Below is the question. Please don't send me to other sites and just explain why it is wrong. The number of children, x, belonging to each of eight families registering for swimming was 1, 6, 1, 3, 5, 4, 5, 4. Find the mean, x. (Give answer correct to 2 decimal places.)
Changed: Your submitted answer was incorrect. Your current answer has not been submitted. .

If you are working on the computer, you have to get the answer exactly right.
It asked for the answer to 2 decimal places. If you put three (3.625), it could mark you wrong.
On the other hand, there are two ways to round it to 2 decimal places.
Most people round it up when it is a 5 or more which is truncated, bringing it to 3.63.
The more meticulous way (such as accounting) would round it to an even number, which in this case would be 3.62. This is done to avoid indiscriminently rounding up which will cause a systematic error.
Respond to this Question
Similar Questions

Chemistry
How much water needs to be added to 150mL of an 0.75 molar solution of lithium phosphate to make the solution 0.625 molar? 
math
When a positive integer, n, is divided by 24 the remainder is 18. When n is divided by 8 the remainder is: A.0 B.1 C.2 D.4 E.6 I tried doing n/24=18 and I got 432 and when I divided it by 8 I got 54; am I misinterpreting the question? 
calculus
s=4.9t²+245t+14.7 s=4.9(t²245/4.9t)+14.7 s=4.9(t²50t)+14.7 s=4.9(t²50+625625)+14.7 s=4.9(t²50+625)+(4.9)(625)+14.7 s=4.9(t25)²+30625.5+14.17 s=4.9(t25)²+3077.2 as you can see on the process of the problem on … 
Reading HELP PLEASE!!!!!!!!!!!
Can someone send me like a book report form? 
science
What would happen if the temperature of the tundra increased by 20*F? 
Maths
Please could I have some guidance and advice on the following question? 
english
please could someone tell whether the film miss congeniality was a book. If not can you think of a film that was a book, which had a character similar to gracie hart either as the fbi agent or as miss new jersey. many thanks 
Physical Science
Can someone please help me with this question Im not really sure what the question is asking, I don't understand at all. Please explain. With sound, you get harmony when the frequencies of two sounds are in the ratios of small integers … 
English and grammar
i need someone to check my work but i cant just copy it and paste it here. i need to send it via email. please give me your email add and ill send it to you. thanks 
algebra
Im begging! please someone teach me how to answer this! when 3 times a number is added to the square of a number the result is ten find the number. I don't know where to start but please teach me or tell me the process to answer this,even …