**Introduction to preparation for expected value in statistics exam:**

Statistics are contracts with all features of this, counting not only the group, analysis and construable expected value, but also planning the group of expected value. We will study the statistics and getting the expected value with help of example problems. In this article we will discuss preparation for expected value in statistics exam.

Now we will solve the mean and median example problems in statistics and find the expected value for preparation the statiatics exam.

**Mean:**

The mean must be the average of given list of the values.

**Problem for mean:**

Find the mean value of the numbers 147,123,159,125.

**Solution:**

The given values are 147,123,159,125.

Addition of the given list of values are,

147+123+159+125 = `(554)/(4)`

The total of the given numbers = 4

Mean = 138.5

= 138.5

Expected value in mean is 138.5.

**Median:**

Now we will solve median problem and find the expected value with help of example problem for preparation the statistics exam.

If we find the median value, we must arrange the given values in an order.

**Example median problem:**

Find the expected value for median in given numbers.

The given values are 148, 32,170,165,121.

**Solution:**

Given values are, 148, 32,170,165,121.

The ascending order of the given group of numbers are,

32,121,148,165,170.

The expected value in median is 148.

**Mode:**

Now we will solve the mode example problem and find the expected value for preparation the statistics.

The mode is defined as the particular value is occurred more times in a given set.

**Statistics problem for mode:**

Find the expected value of the given numbers 100.5, 50.5, 60.5, 23.1, 60.5.

**Solution:**

Given numbers are,

100.5, 50.5, 60.5, 23.1, 60.5.

The ascending order of group of values = 23.1, 50.5, 60.5, 60.5, 100.5.

Here, the value ’60.5’ is appearing repeatedly in the list of given numbers.

Therefore, the mode of those group of values = 60.5

**Answer:**

Mode = 60.5.

**Range:**

Now we will solve the range problem and also find the expected value for preparation the statistics exam.

The difference among the highest value and smallest value is said to be range.

**Statistics problem for range:**

Solve the range of the numbers, 12.5, 5.5, 7.5, 16.5.

Find the expected range in given numbers.

**Solution:**

Given group of numbers are,

12.5, 5.5, 7.5, 16.5.

The formula for range is,

**Range = Biggest value – Smallest value**

Here, Biggest value = 16.5

Smallest value = 5.5

Therefore, Range = 16.5 – 5.5.

= 11

Answer:

Range = 11

**Exam questions in statistics:**

Find mean, median, mode and range in the following values.

69, 45,65,69,87.

**Exam question 1:**

Find is the mean in the following numbers.

**Answer:**

67

**Median:**

65

**Mode:**

69

**Range:**

42.

**Exam question 2:**

Find mean, median, mode and range in the following values.

70, 60,50,40,10.

**Mean:**

46

**Median:**

50

**Mode:**

Null.

**Range:**

60.

That’s all about preparation for expected value in statistics exam.