Mathematics, 06.06.2021 14:00 NatsuDDW

See image for question. Please show workings. Sorry for the wobbly writing.

*freq= frequency.

See image for question. Please show workings.

Sorry for the wobbly writing.*freq= frequency.

Answers: 3

Show answers

Answers

Answer from: exoticbunnylover123

See below and attached

Step-by-step explanation:

Refer to the graph attached

1. The mean is calculated using below table

Marks Frequencies Midpoint Product

10 to 14 18 12 216

15 to 19 9 17 153

20 to 24 11 22 242

25 to 29 25 27 675

30 to 34 14 32 448

35 to 39 3 37 111

Sum 80 1845

The mean is:

1845/80 ≈ 23

2. The mode is the midpoint of the tallest bar.

The mode is

(25 + 29)/2 = 27

3. The median is the middle of the data set. The number of frequencies is 80, the middle frequency is number 40, which is within the 25 to 29 bar.

Formula to calculate median:

L + ( (n/2 – F) / f ) * w

where

L: The lower limit of the median group = 25 n: The total number of observations = 80 F: The cumulative frequency up to the median group = 18 + 9 + 11 = 38 f: The frequency of the median group = 25 w: The width of the median group = 29 - 25 = 4

Substitute values and calculate:

25 + ((80/2 - 38)/25) *4 = 25.32
See image for question. Please show workings.

Sorry for the wobbly writing.*freq= frequency.

Answer from: Quest

i dont know

step-by-step explanation:

What intervals is the function increasing? decreasing?

Answer from: Quest

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100 * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

= $25.99 - $6.49

=$19.5

total amount to be paid = $19.5

Another question on Mathematics

Mathematics, 21.06.2019 14:20

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

Answers: 2

Answer

Mathematics, 21.06.2019 18:00

Need on this geometry question. explain how you did it.

Answers: 2

Answer

Mathematics, 21.06.2019 18:00

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Answers: 1

Answer

Mathematics, 21.06.2019 19:00

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup