1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irga5000 [103]
3 years ago
5

Mary took 8 tests in science and received the following scores: 87,60,76,92,63,91,88,75

Mathematics
1 answer:
MariettaO [177]3 years ago
3 0

Answers:

  • mean = 79
  • mode = none
  • median = 81.5

=================================================

Explanation:

To get the mean, you add up the numbers and then divide by n = 8, since there are 8 scores

Adding the scores gets us: 87+60+76+92+63+91+88+75 = 632

Divide that over n = 8 to get 632/n = 632/8 = 79

The mean is 79

You have the correct answer. Nice work.

---------------

The mode is the most frequent value.

In this data set, we don't have any repeated values. Each unique number is listed one time only. So that tells us we don't have a mode here.

---------------

To get the median, we need to sort the items from smallest to largest

{87,60,76,92,63,91,88,75} sorts to {60,63,75,76,87,88,91,92}

Because we have n = 8 values, which is an even number, this tells us that the median is between slot n/2 = 8/2 = 4 and slot 5

The values 76,87 are in slots four and five in that order. Add them up and divide by 2:  (76+87)/2 = 163/2 = 81.5 is the median

You might be interested in
7 increased by a number w
amid [387]

Answer:

The answer is

w + 7

8 0
2 years ago
Read 2 more answers
Determine whether the function f(x) = -6x^2 - 5 is a quadratic function<br> A) Yes<br> B) No
Yuki888 [10]
The answer is no!!!!!!!
6 0
3 years ago
3) Let h(x)= |2x|-4. Find h(x) when x = -7.<br> a) -10<br> b) 10<br> c) -13<br> d) 13
svlad2 [7]

Answer:

h(x) = 10

Step-by-step explanation:

Given

h(x) = |2x| - 4

x = -7

Find h(x)

Substitute -7 for x

h(x) = |2*-7| - 4

h(x) = |-14| - 4

Absolute values return positive. So:

h(x) = 14 - 4

h(x) = 10

8 0
2 years ago
if the working age population is 250 million,170 million are unemployed and 9 million are unemployed, the unemployment rate is
Amiraneli [1.4K]

Answer: 5%

Step-by-step explanation:

9/179

4 0
3 years ago
Which numbers chart follows the rule add 7
shepuryov [24]
7,14,21,2835,42,49,56
8 0
2 years ago
Other questions:
  • 5(x-10)=30-15x<br> Solve for x
    6·2 answers
  • A high school coach wants to buy new athletic shorts for the 15 members of the basketball team. The coach must spend less than $
    6·2 answers
  • A pair of equations is shown below:
    11·2 answers
  • The slope of a line is2/3 . What is the slope of a line that is perpendicular to this line? A-3/2 B-2/3 C2/3 D3/2
    5·2 answers
  • Which of the shapes below is a type of rectangle? Select all that apply.
    7·2 answers
  • Use the identity below to complete the tasks:
    7·1 answer
  • Convert the unit of capacity. 1/8 pt = __ qt
    6·1 answer
  • Suppose you have a standard deck of 52 cards. What is the probability that if you select a card at random that it does not have
    10·1 answer
  • HELP!!! MATH!!! 100 PTS !!!
    7·1 answer
  • In a sentence.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!