Thursday, November 22, 2012

Practice Model Definition


If any student wants to know about the definition for math practice model with examples, they can be referring the below examples for them. In this we can see some definitions for practice model in statistics with example problems. Let us see some of the definition in statistics such as mean, median and mode with example and practice problems with solve as follows.

Practice Model Definition - Definitions:

In this following we can see some definition for math practice model in statistics.

Practice Model Definition 1:

Mean:

It is a set of data which can find the average in dividing by sum of numbers with total numbers in the given data.

Practice Model Definition 2:

Median:

It is a set of numbers which can find the middle numbers and arrange the numbers in order to select the middle number.

Mode:

It is a set of numbers that can occur frequently in a set of data and no number can occur more than once.
Practice Model Definition - Examples and Practice Problems:

In this following we can see some definition for math practice model in statistics with example and practice problems.

Find the mean of weights for 6 peoples in kilograms are 15, 9, 10, 7, 16, and 23.

Solution:

                Sum of numbers
Mean = ------------------------
                  Total number

= `(15+9+10+7+16+23)/6`

= `80/6`

= 13.33

Find the median of 10, 24, 12, 21, 7 and 18.

Solution:

Arrange the data in ascending order as 7, 10, 12, 18, 21 and 24.

N = 6

Since n is even, median = `1 / 2` [`(nth)/2` item value + (`n / 2` + 1)th item value]

= `1 / 2` [6th item value + (`6/2` + 1)th item value]

= `1 / 2` [3rd item value + 4th item value]

= `1 / 2` [12 + 18]

= `1 / 2 xx 30`

= 15

Find the mode of 22, 17, 19, 15, and 22.

Solution:

22 are repeated twice.

Mode = 22

Practice Problems:

Find the mean of weights for 6 peoples in kilograms are 5, 9, 10, 7, 16, and 23.

Solution:

= 11.66

Find the median of 8, 25, 11, 21, 6 and 17.

Solution:

= 14

Find the mode of 20, 17, 11, 13, and 20.

Solution:

= 20



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