All categories

3 years ago

Brainlyest for best answer

Mathematics

2 answers:

bazaltina [42]3 years ago

7 0

Answer:

Step-by-step explanation:

Add all of the numbers together then divide by 5

DENIUS [597]3 years ago

4 0

Answer:

Step-by-step explanation:

To find the mean, you have to add all the numbers together and then divide it by the amount of numbers that you added together.

For example, 23 + 18 + 24 + 15 + 25 = 105

105 ÷5 = 21

You might be interested in

Lorelai’s bank account showed -14.56 dollars on her statement. She withdrew (took out) another 60 dollars from her account that

Aleks [24]

Answer:I

Step-by-step explanation:I am not sure how to do it is very stressful

7 0

3 years ago

Mandy is setting up for a reception. For the number of seats needed, she knows she can use either 8 seats at each table with non

kenny6666 [7]

100 according to my teacher

8 0

3 years ago

There are 2.54 centimeters in an inch. when using this conversion factor, how many significant figures are you limited to?

cestrela7 [59]

<span>infinite number of significant figures would be your answer </span>

7 0

4 years ago

Eli walked 2.5 km each day. How many days will he take to cover 45 km?

diamong [38]

18 because 2X=45 and that technically equals 18 your welcome

6 0

3 years ago

Read 2 more answers

Mr. Green teaches mathematics and his class recently finished a unit on statistics. The student scores on this unit are: 40 47 5

Harrizon [31]

Answer:

Mean = 64.46, Median = 62 and Mode = Bi-modal (50 and 62)

Range of the data is 55.

Step-by-step explanation:

We are given that Mr. Green teaches mathematics and his class recently finished a unit on statistics.

<u>The student scores on this unit are:</u> 40, 47, 50, 50, 50, 54, 56, 56, 60, 60, 62, 62, 62, 63, 65, 70, 70, 72, 76, 77, 80, 85, 85, 95.

We know that Measures of Central Tendency are: Mean, Median and Mode.

Mean is calculated as;

Mean = $\frac{\sum X}{n}$

where $\sum X$ = Sum of all values in the data

n = Number of observations = 24

So, Mean = $\frac{40+ 47+ 50+ 50+ 50+ 54+ 56+ 56+ 60 +60+ 62+ 62+ 62+ 63+ 65+ 70+ 70+ 72+ 76+ 77+ 80+ 85+ 85+ 95}{24}$

= $\frac{1547}{24}$ = 64.46

So, mean of data si 64.46.

For calculating Median, we have to observe that the number of observations (n) is even or odd, i.e.;

If n is odd, then the formula for calculating median is given by;

Median = $(\frac{n+1}{2})^{th} \text{ obs.}$

If n is even, then the formula for calculating median is given by;

Median = $\frac{(\frac{n}{2})^{th}\text{ obs.} +(\frac{n}{2}+1)^{th}\text{ obs.} }{2}$

Now here in our data, the number of observations is even, i.e. n = 24.

So, Median = $\frac{(\frac{n}{2})^{th}\text{ obs.} +(\frac{n}{2}+1)^{th}\text{ obs.} }{2}$

= $\frac{(\frac{24}{2})^{th}\text{ obs.} +(\frac{24}{2}+1)^{th}\text{ obs.} }{2}$

= $\frac{(12)^{th}\text{ obs.} +(13)^{th}\text{ obs.} }{2}$

= $\frac{62 + 62 }{2}$ = $\frac{124}{2}$ = 62

Hence, the median of the data is 62.

A Mode is a value that appears maximum number of times in our data.

In our data, there are two values which appear maximum number of times, i.e. 50 and 62 as these both appear maximum 3 times in the data.

This means our data is Bi-modal with 50 and 62.

The Range is calculated as the difference between the highest and lowest value in the data.

Range = Highest value - Lowest value

= 95 - 40 = 55

Hence, range of the data is 55.

5 0

4 years ago