50 Companies percentages of revenues spent on R&D are given below. 5.2 6.9 7.8 8.8 10.5 5.6 6.9 7.9 9 10.5 5.9 7.1 8 9.2 10.6 6 7.1 8 9.4 11.1 6.5 7.2 8.1 9.5 11.3 6.5 7.2 8.2 9.5 11.7 6.5 7.5 8.2 9.6 12.0 6.6 7.5 8.2 9.7 13.2 6.8 7.7 8.4 9.9 13.5 6.9 7.7 8.5 10.1 13.5 Find the following Mean = Median= Mode= Range= Variance= Lower Quartile= Upper Quartile=
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
- 50 Companies percentages of revenues spent on R&D are given below.
|
5.2 |
6.9 |
7.8 |
8.8 |
10.5 |
|
|
5.6 |
6.9 |
7.9 |
9 |
10.5 |
|
|
5.9 |
7.1 |
8 |
9.2 |
10.6 |
|
|
6 |
7.1 |
8 |
9.4 |
11.1 |
|
|
6.5 |
7.2 |
8.1 |
9.5 |
11.3 |
|
|
6.5 |
7.2 |
8.2 |
9.5 |
11.7 |
|
|
6.5 |
7.5 |
8.2 |
9.6 |
12.0 |
|
|
6.6 |
7.5 |
8.2 |
9.7 |
13.2 |
|
|
6.8 |
7.7 |
8.4 |
9.9 |
13.5 |
|
|
6.9 |
7.7 |
8.5 |
10.1 |
13.5 |
Find the following
- Mean =
Median =Mode = Range = Variance=- Lower Quartile= Upper Quartile=
- Inter
Quartile Range = - Standard Deviation=
First SD interval, =
Number of data =
% of data =
Second SD interval =
Number of data =
% of data =
Third SD interval =
Number of data =
% of data =
- Create a frequency distribution table with the 1st class interval as 5.0 – 6.0
- Also include class relative frequency in the table
- Graph a Frequency histogram.
- Construct a Stem and Leaf display
- Answer the following using the above statistics
- How many companies spent between 6.0% to 10.0% for R & D.
- What percentage of the companies spent above 10% on R & D.
Which is a better method to display this data and why
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