Question

Class mark of the 1st class interval is 5 and there are five classes. If the class size is 10 then what is the last class interval?

║Answer it soon║

Answer 1

Answer:

0--10

10 --20

20--30

30 --40

40--50

are the class interval

last one is 40 --50

Step-by-step explanation:

aIf it is helpful to you then please follow me and mark me as brainlist please clara2002

Answer 2

SOLUTION

GIVEN

• Class mark of the 1st class interval is 5 and there are five classes.

• The class size is 10

TO DETERMINE

The last class interval

CONCEPT TO BE IMPLEMENTED

Class Interval :

When the number of sample values are large in number and are in wide range, then the whole data is divided in a number of several groups according to the size of the sample. Each of these groups, made as above, is known as class interval

Class length :

Length of the class interval of an class is defined to be the difference between the lower and upper class boundaries ( not class limits) of that particular class interval.

Class length = Upper Class boundary - Lower class boundary

Class Mark :

Class mark of the 1st class interval is 5 and there are five classes. If the class size is 10 then what is the last class interval

EVALUATION

Here it is given that Class mark of the 1st class interval is 5

There are five classes.

The class size is 10

So Class Mark of five classes are 5 , 15 , 25 , 35 , 45

Thus class mark of last class interval

Upper Class boundary

$\sf{ = 45 + \dfrac{10}{2} }$

$\sf{ = 45 + 5 }$

$\sf{ = 50 }$

Lower class boundary

$\sf{ = 45 - \dfrac{10}{2} }$

$\sf{ = 45 - 5 }$

$\sf{ = 40 }$

Hence the required class interval 40 - 50

FINAL ANSWER

The last class interval = 40 - 50

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ The value of mean, median and mode can never be equal.

Is it true or false

https://brainly.in/question/36450784

2. For 10 observations if mean and variance of the series is 16 and 20 respectively then sum of square of all observation i...

https://brainly.in/question/34371921