Cambridge AS Level Mathematics 9709 (Probability & Statistics 1) Revision Exercise on Measures of Central Location and Variation [Part 1]

Mathrealm

mean, standard deviation, variance, spread, representation of data, grouped data, ungrouped data, frequency tables, coded formula, statistics

Here is the copy of the practice exercises on Representations of Data They are all taken from CIE AS Level Statistics 1 past papers. The file contains ten (10) items. It contains:

Measures of Central Locations and Measures of Spread (Mean and Variance)

Ungrouped Data

mean, standard deviation, variance, spread, representation of data, grouped data, ungrouped data, frequency tables, coded formula, statistics, stem and leaf diagram

Grouped Data

Using Coded Formula

If you want to download the complete file, just click HERE.

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2 comments:

MathrealmDecember 3, 2019 at 4:14 PM
ANSWERS:

1)(i) diagram
(ii) Any two from:
- Children’s estimates more spread out
- Adults estimates lower
- Adults are symmetrical whereas children are skewed
2) n = 22
3) mean = 45.8, sd = 14.9
4) a = 4.5, b = 6
5) (i) new mean = 5.83
(ii) new sd = 1.46
6) (i) graph
(ii) 21.4% (accept 18.5 to 22)
(iii) med = 4.15 (accept 4.1 to 4.2)
7) (i) graph
(ii) h = 22.5 (accept 21 to 23)
(iii) sd = 6.01
8) (i) graph
(ii) 75.1
(iii) mean = 63.4375, var = 7.32
9) (i) sd = 2.1
(ii) c = 78.2
10) Sigma x = 804
Sigma x^2 = 27011.76 (27000 in 3 sf)
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AnonymousMay 26, 2023 at 12:04 PM
Nice 👍
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