Total frequency = 56.
Total fx = 1717
midpoint of 45-49 = 47
Mean of the data = 30.7
Median of the data = 31.3
Mode of the data = 32.5
<h3>What is Mean?</h3>
A measure of central tendency (also referred to as measures of centre or central location) is a summary measure that attempts to describe a whole set of data with a single value that represents the middle or centre of its distribution.
Here, total frequency ∑f = 5+7+9+11+8+7+5+4
= 56 (option B)
Total fx or ∑fx = 12X4 + 17X5 + 22X7 + 27X8 + 32X11 + 37X9 + 42X7+ 47X5
= 48 + 85 + 154 + 216 + 352 + 333 + 294 + 235
= 1717 (option B)
The midpoint of the score 45-49 = (45 + 49)/2
= 47 (option B)
Mean of the data = ∑fx/ ∑f
= 1717 / 56
= 30.7 (option D)
Median of the data = 31.3 (option A)
Mode of the data = 32.5 (option B)
Thus, Total frequency = 56.
Total fx = 1717
midpoint of 45-49 = 47
Mean of the data = 30.7
Median of the data = 31.3
Mode of the data = 32.5
Learn more about Central Tendency from:
brainly.com/question/13606190
#SPJ1
Answer:
x= -25
Step-by-step explanation:
f'(x)=10x+4
Hey use Socratic for questions like this
180-149= 31
180-119-31=30
m<1=30
Answer:
75.95cm
Step-by-step explanation:
<u>4.9 multiplied by 15 will represent the 15</u> <u>seconds</u>
4.9 • 15 = 73.5
<u>4.9 divided by 2 will equal the 1/2 seconds</u>
4.9 ÷ 2 = 2.45
<u>add them all together</u>
73.5 + 2.45 = 75.95 cm
