A) For both sets A and B, calculating the mean, range, and quartiles are a good way of measuring the center and spread. Using standard deviation may not be the best because we do not know whether the distributions are normal or not.
b) For set A, the lowest value is 63, while the highest is 86. An estimate for the mean, based on the average of these, is 74.5. Most of the 70+ values are below 74.5, so we may guess that the mean will be above the median.
For set B, the lowest is 63, while the maximum is 95. The estimated mean would be 79. But since there are more values on the 80+ and 90+ side, the median is likely to be higher than 79.
c) For set A, the mean is 74.79, while the median is 73, therefore the mean is above the median, and the prediction in part b is correct.
Answer:
Step-by-step explanation:
Given:
The scale 1 1/2 (
) inches = 15 feet
<=> 1 inch = 
= 10 feet.
<=> 1 feet = 
inch
The dimensions of Sara's apartment are 22 1/2 (
) feet by 25 feet, so the new dimensions of Sara's apartment by inches are:
- () feet = * =
inches - 25 feet = 25* =
inches
Hope it will find you well.
Answer:
10x+2
Step-by-step explanation:
-3x and 13x are like terms and -3x+13x=10x
-6 and 8 are like terms and -6+8=2
Therefore you have 10x+2
The probability of drawing a club is 13/52. The probability of drawing a face card is 12/52. However, three of the clubs are also face cards, so there are only 22 of the 52 cards that are either clubs or face cards.
Answer:
Angle 1 equals 90 degrees. Angle 2 equals 38 degrees.
Step-by-step explanation:
Angle 1 is at the cross of two perpendicular lines, making it 90 degrees. Angle 2 can be found by making the two equal side lengths and the middle line into one triangle. This means that two of the angles are 52 degrees. This leaves 76 degrees to be split in the triangle. The middle line cuts the angle in half, making it 38 degrees
