OCR AS LEVEL MATHEMATICS B PAPER 2 QUESTION PAPER 2023 (H630/02: Pure Mathematics and Statistics)

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OCR AS LEVEL MATHEMATICS B PAPER 2 QUESTION PAPER 2023 (H630/02: Pure Mathematics and Statistics). DOWNLOAD OFFICIAL AND VERIFIED OCR AS LEVEL MATHEMATICS B PAPER 2 QUESTION PAPER 2023 ON www.leakedexams.com.

1 A researcher collects data concerning the number of different social media platforms used by
school pupils on a typical weekday.
The frequency table for the data is shown below.
Number of different social media platforms 0 1 2 3 4 5 6 7
Frequency 2 5 9 15 8 5 4 1
The researcher uses software to represent the results in this diagram.
0 1
2
4
6
Frequency 8
10
12
14
2 3 4 5
Number of different social media platforms
6 7 8 9
(a) Explain why this diagram is inappropriate. [1]
(b) Calculate the following for the number of social media platforms used:
Â (i) the mean, [1]
Â (ii) the standard deviation. [1]
2 (a) Express x x6 1 2 - in the form ( ) x a b 2 - - , where a and b are integers to be determined. [2]
(b) Hence state the coordinates of the turning point on the graph of y x 6 1 x
2 = - . [1]

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Author	OCR KING
Published	30 Jul 2024
Included files	PDF
H630 H630/02 OCR AS LEVEL MATHEMATICS B PAPER 2 QUESTION PAPER 2023 OCR AS LEVEL MATHEMATICS B PAPER 2 OCR MATHEMATICS B PAPER 2 2023 MATHEMATICS B PAPER 2 OCR OCR MATHEMATICS B 2023 OCR AS LEVEL MATHEMATICS B PAPER 2 2023 AS LEVEL MATHEMATICS B 2