Question

Please answer question if wrong reported!

Answer 1

1. Range = 4

2. Total Students = 30

3. Mean = 7.8

Step-by-step explanation:

1. Range

Let us define range first

Range is the difference between the largest and smallest value in a data set

so,

in the given data,

The greatest marks are 10 and smallest are 6.

Range = Largest Value - Smallest Value

= 10-6

=4

2. Total students

To find the total students we will add all the frequencies

So,

$Total\ Students=5+4+7+10+4=30$

Total students are 30

3. Mean:

The mean is given by:

$Mean = \frac{Sum\ of\\ values}{No.\ of\ values}$

In case of frequency table in the given form, the frequency is multiplies with the data value$Mean = \frac{(6)(5)+(7)(4)+(8)(7)+(9)(10)+(10)(4)}{30}\\=\frac{30+28+56+90+40}{30}\\=\frac{234}{30}\\=7.8$

Hence,

1. Range = 4

2. Total Students = 30

3. Mean = 7.8

Keywords: Mean, Range

Learn more about mean at:

• brainly.com/question/11286417
• brainly.com/question/12884373

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