Asked by Lottie · 2 years ago
Could someone explain Standard Deviation? I am studying for the level three statistics award?
Standard deviation can be found by first calculating the variance given by mean of the squares - square of the means. Taking the square root of this gives the standard deviation, a measure of average distance of each data point from the mean.
Asked by Annie · 2 years ago
How do you work out perimeter?
The perimeter is the distance around the outside of a shape. To work out the perimeter of a shape you need to know the lengths of all of the sides of the shape and then add them together. This will give you the perimeter of the shape.
Asked by Nova · 2 years ago
The nth term of a sequence is 3n + 2 A) work out the first 3 terms in the sequence B) work out the 10th term in the sequenc?
The nth term is given by 3n+2, so for the first term, this is when n=1, so we substitute 1 as n and do a similar thing for 2nd and 3rd terms. 1st term (n=1): 3(1)+2= 3+2=5 2nd term (n=2): 3(2)+2=6+2=8 3rd term (n=3): 3(3)+2= 9+2=11 ... the 10th term of the sequence is when n=10 so we substitute n=10 into the nth term formula which gives: 3(10)+2=30+2=32
Asked by Tracy · 2 years ago
What is the mode out of these numbers 3 7 2 4 7 5 7 1 8 8?
The mode of a set of numbers is the number that appears the most. Here we can see that 7 appears 3 times and no other number appears more than that, so the mode is 7.
Asked by Ian · 2 years ago
Which websites are best for finding past papers, mark schemes and examiner’s comments?
For past paper,mark schemes and examiners comments you can always go on the exam board website for example if you wanted to find resources for edexcel maths you would go on the edexcel website. I definitely would recommend physics and maths tutor as they have everything for all exam boards all on one website. Hope this helped !!
Asked by Fozia · 2 years ago
What can I do for work experience or to get good grades in year 9.How can I set myself out for life at that age?
This is great!! When i was in year 9 i didn't spend much time thinking about what i would do to prepare for exams and so i can be ready when i do my gcses. My best advice would be to do a bit of work everyday as this will help you in the future, also doing this you wont have a huge amount of work waiting for you in year 11. Another thing i would of personally done would be entering myself maybe in... more
Asked by Mohsin · 2 years ago
Twenty three percent of seventy five what is the answe?
10% of 75 = 7.5 20% of 75 = 15 1% of 75 = 0.75 3% of 75 =2.25 23% of 75 = 15 + 2.25 23% of 75 = 17.25
Asked by Bella · 2 years ago
How do you find the equation of a line on a graph using the equation y=mx+c?
First identify the two cordinates on the graph. Lable the first co-ordinate x1 and y1 . The second coordinate x2 and y2. Then use the formula y2 minus y1 divded by X2 minus X1. This will give you the gradient of the line. Lastly, look at where the line crosses the y axis. This will be the c intercept. Hope this helped !!
Asked by Erin · 2 years ago
Why do I fail in maths?
Maths is very different to other subjects and it requires you to be able to be dedicated and consistent with the amount of work you are putting in. Your results define the amount of work you put in. When you are introduced to a new topic you have to have a good mindset and attitude before learning, this will help you understand complicated concepts. If someone is able to get a good result that do... more